Using all three of Newton's laws of motion, carefully describe the motion of a baseball beginning when the ball is resting in the pitcher's glove as he stands on the mound until the ball is hit by the batter (assume the ball is hit). Ignore what kind of pitch is thrown and air resistance. The answer should focus on the forces and motion of the ball (not the players), and should include which of Newton's laws each motion/force follows. в у = = т т. O Words
Answers
Answer:
As the ball sits in the glove of the pitcher, it is acted upon by the downward force of gravity. Based on Newton’s 3rd law (N3), the ball pulls upward on the Earth with exactly the same force. The force of gravity is perfectly balanced by the upward normal force of the glove on the ball. There is no net force, so the ball remains at rest in the glove based on Newton’s 1st law (N1). When ready to pitch, the pitcher’s hand lifts the ball out of the glove. The ball is now being acted on by a net force from the pitcher’s hand and experiences motion, per Newton’s 2nd law (N2). The upward force of the pitcher’s hand on the ball is stronger than the downward pull of gravity, so the ball moves up, out of the glove, and behind the pitcher’s head. Its inertia is continually changing due to the net force (N1). During this movement, the ball is exerting a force on the pitcher’s hand equal and opposite to the force the hand exerts on the ball (N2). Because the ball’s mass is smaller, its acceleration is larger, resulting in a net movement of the ball. As the pitcher throws the ball forward, he exerts a large force on the ball, causing it to accelerate to a high speed (N2). The moment the ball is released, this external force stops once the ball reaches the same velocity as the pitcher’s hand. Now, the force of gravity is the only force acting on the ball. The force of gravity is unbalanced and in the downward direction, this causes the path of the ball to bend slightly downward as it travels towards the batter. The ball exerts a force on the Earth equal and opposite to the force of gravity (N3); again, due to the mass of the Earth, the effect on the Earth is negligible (N2). In the horizontal direction, there are no net forces, so the ball moves at the same speed and in the same direction as it did when it was released by the pitcher’s hand (N1). It continues until it reaches the plate, where the batter swings the bat and hits the ball. The bat exerts a net force on the ball, causing it to change both speed and direction (N1). On impact, the ball’s velocity is reduced to zero (this is a large deceleration) (N1 and N2). The force of the bat then causes the ball to accelerate and move in a new direction (N1 and N2). The ball exerts the same force on the bat (N3), which causes the bat to slow slightly as the batter finishes the swing.
Explanation:
Related Questions
An objects motion changes
Answers
Answer:
uh finish the question please lol.
Which statement is part of Dalton's atomic theory?
Matter is composed of small particles called atoms.
Atoms can be divided into their subatomic particles.
Atoms are able to be seen with proper spectroscopy equipment.
Chemical reactions can change atoms from one type to another.
Answers
Answer:
Dalton’s atomic theory was a scientific theory on the nature of matter put forward by the English physicist and chemist John Dalton in the year 1808. It stated that all matter was made up of small, indivisible particles known as ‘atoms’.
Explanation:
Atoms can be divided into their subatomic particles.
The statement that is part of Dalton's atomic theory is as follows: Matter is composed of small particles called atoms.
What is Dalton's atomic theory?John Dalton is a scientist that first stated the theory of chemical combination in 1803.
The components of these theory are as follows:
Elements consist of indivisible small particles called atoms.All atoms of the same element are identical i.e. different elements have different types of atom. Atoms can neither be created nor destroyedTherefore, according to this question, the statement that is part of Dalton's atomic theory is as follows: Matter is composed of small particles called atoms.
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can you help me on this.
please
Answers
Answer:
Despite the fact that Joule's experiment failed, he accomplished a great deal. He developed a connection between the flow of current through a resistance and the heat produced. He is also credited with the first measurement of a gas molecule's velocity. For his experimental researches on the dynamical theory of heat, he was awarded a medal.
Explanation:
How can you measure the strength of any electric field?
Answers
Answer:
The strength of the source charge's electric field could be measured by any other charge placed somewhere in its surroundings. The charge that is used to measure the electric field strength is referred to as a test charge since it is used to test the field strength. The test charge has a quantity of charge denoted by the symbol q.
Explanation:
Electric field strength is a vector quantity; it has both magnitude and direction. The magnitude of the electric field strength is defined in terms of how it is measured. Let's suppose that an electric charge can be denoted by the symbol Q. This electric charge creates an electric field; since Q is the source of the electric field, we will refer to it as the source charge. The strength of the source charge's electric field could be measured by any other charge placed somewhere in its surroundings. The charge that is used to measure the electric field strength is referred to as a test charge since it is used to test the field strength. The test charge has a quantity of charge denoted by the symbol q. When placed within the electric field, the test charge will experience an electric force - either attractive or repulsive. As is usually the case, this force will be denoted by the symbol F. The magnitude of the electric field is simply defined as the force per charge on the test charge.
A uniform disk, a uniform hoop, and a uniform solid sphere are released at the same time at the top of an inclined ramp. They all roll without slipping. In what order do they reach the bottom of the ramp
Answers
Answer:
sphere, disk, hoop
Explanation:
See attached file
Elements are organized on the periodic table based on their properties. Which statement correctly predicts and explains the chemical reactivity of two different metals?
Group of answer choices
Rubidium (Rb) is more reactive than sodium (Na) because the valence electrons in sodium atoms are closer to the nuclei and easier to remove.
Strontium (Sr) is more reactive than magnesium (Mg) because the valence electrons in strontium atoms are farther from the nuclei and harder to remove.
Lithium (Li) is less reactive than potassium (K) because the valence electrons in lithium atoms are closer to the nuclei and harder to remove.
Barium (Ba) is less reactive than calcium (Ca) because the valence electrons in calcium atoms are farther from the nuclei and harder to remove.
Answers
Answer: a
Explanation:
Astronauts on a distant planet set up a simple pendulum of length 1.2 m. The pendulum executes simple harmonic motion and makes 100 complete vibrations in 280 s. What is the magnitude of the acceleration due to gravity on this planet
Answers
Answer:
If you use P = 2 * pi * (L / g)^1/2 for the period of the simple pendulum
g = 4 * pi^2 * 1.2 / 2.8^2 = 6.04 m/s2
Note: omega = 2 pi * f = 2 pi / P and omega = (g / L)^1/2
Answer:
6.0426 m/s^2
Explanation:
The period of a simple pendulum is equal to 2pi sqroot L/g
T = 280s/100 rev = 2.8s
Plug in 1.2 m for L and 2.8s for T, then solve for g to get 6.04 m/s^2 (dependent on how you round)
Calculate the magnitude and direction of the resultant of the following forces
Answer and I will give you brainiliest
Answers
Answer:
250N same direction
Explanation:
100+150 = 250N
same direction
1. Draw a quantitative motion map for the following description: A bicyclist speeds along a road at 10 m/s for 6 seconds. Then she stops for three seconds to make a 180˚ turn and then travels at 5 m/s for 3 seconds.
Answers
Answer:
Please find the attached file for the figure.
Explanation:
Given that a bicyclist speeds along a road at 10 m/s for 6 seconds.
Its acceleration = 10/6 = 1.667 m/s^2
The distance covered = 1/2 × 10 × 6
Distance covered = 30 m
That is, displacement = 30 m
Then she stops for three seconds to make a 180˚ turn and then travels at 5 m/s for 3 seconds.
The acceleration = 5/3 = 1.667 m/s^2
The displacement = 1/2 × 5 × 3
Displacement = 7.5 m
The resultant acceleration will be equal to zero.
While the resultant displacement will be:
Displacement = 30 - 7.5 = 22.5 m
Please find the attached file for the sketch.
Approximately 20.0gm of milk at 6.0oC is added into a cup containing 270.0 gm of weak tea. The specific heat of weak tea is 3.91 x 103J kg-1 oC-1 and the final temperature of the milk - tea mixture is 85.0oC. Given the initial temperature of the weak tea is 90.0oC, what is the specific heat of milk?
Answers
Answer:
4161 J/kg·°C
Explanation:
We can use the principle of conservation of energy to solve this problem, which states that the total heat energy in a closed system is constant. The heat lost by the tea is equal to the heat gained by the milk.
Let's first calculate the heat lost by the tea:
Q(tea) = mcΔT
Q(tea) = (0.27 kg)(3910 J/kg·°C)(90.0°C - 85.0°C)
Q(tea) = 6555 J
where m is the mass of tea, c is the specific heat of tea, and ΔT is the change in temperature.
Next, let's calculate the heat gained by the milk:
Q(milk) = mcΔT
Q(milk) = (0.02 kg)(c)(85.0°C - 6.0°C)
Now we can equate the two expressions:
Q(tea) = Q(milk)
6555 J = (0.02 kg)(c)(79.0°C)
Solving for c, we get:
c = 4161 J/kg·°C
Therefore, the specific heat of milk is approximately 4161 J/kg·°C.
A motorcycle stoop is at a traffic light, when the light turns green, the motorcycle accelerates to a speed of 78 km/h over a distance of 50 m. What is the average acceleration of the motorcycle over this distance?
Answers
The average acceleration of the motorcycle over the given distance is approximately 9.39 m/s².
To calculate the average acceleration of the motorcycle, we can use the formula:
Average acceleration = (final velocity - initial velocity) / time
First, let's convert the final velocity from km/h to m/s since the distance is given in meters. We know that 1 km/h is equal to 0.2778 m/s.
Converting the final velocity:
Final velocity = 78 km/h * 0.2778 m/s = 21.67 m/s
Since the motorcycle starts from rest (initial velocity is zero), the formula becomes:
Average acceleration = (21.67 m/s - 0 m/s) / time
To find the time taken to reach this velocity, we need to use the formula for average speed:
Average speed = total distance/time
Rearranging the formula:
time = total distance / average speed
Plugging in the values:
time = 50 m / 21.67 m/s ≈ 2.31 seconds
Now we can calculate the average acceleration:
Average acceleration = (21.67 m/s - 0 m/s) / 2.31 s ≈ 9.39 m/s²
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When the Moon passes through Earth's penumbra, it is a:
a.Solar eclipse
b. Penumbral eclipse
c.Total lunar eclipse
d Partial eclipse
Answers
Answer: it is B
Explanation: A penumbral lunar eclipse occurs when the Moon passes through Earth's penumbra. The penumbra causes a subtle dimming of the lunar surface, which is only visible to the naked eye when about 70% of the Moon's diameter has immersed into Earth's penumbra.
Which is the dependent variable and what is the trend in the graph?
Experimental Solubility Data for a Sugar
140
130
120
110
Solubility (g/100g H,0)
100
90
80
0
10
50
60
20 30 40
Temperature (*C)
Solubility; decreasing
Solubility; increasing
Temperature; decreasing
Temperature; increasing
Answers
Answer: Solubility; decreasing
Explanation:
Calculate the surface density of atoms in the (111) plane of the body centered cubic lattice. Assume the lattice constant a=5 angstroms. Assume the atoms to be hard spheres, with closest atoms touching each other.
Answers
The surface density of atoms in the (1,1,1) plane of the BCC lattice is 0.16 atoms/angstrom².
To calculate the surface density of atoms in the (1,1,1) plane, we first need to determine how many atoms are in the plane. Since the plane passes through the center of the unit cell, it intersects one-eighth of each of the corner atoms and the full central atom. Therefore, the total number of atoms in the (1,1,1) plane is:
N_atoms = 1 + 8*(1/8) = 2
Next, we need to calculate the area of the (1,1,1) plane. To do this, we can consider the lengths of the sides of the unit cell. Since the BCC lattice has a cubic unit cell, all sides have length a=5 angstroms. The (1,1,1) plane passes through the center of the unit cell and intersects the sides at a 45-degree angle. The distance from the center of the unit cell to the midpoint of one of the sides is a/sqrt(2), so the length of the diagonal of the square face of the unit cell is 2a/√(2) = a√(2). The area of the square face is then (a√(2))² = 2a².
The (1,1,1) plane intersects the square face at a 45-degree angle, so its area is 2*a²/2 = a².
The surface density of atoms is the number of atoms per unit area. Dividing the number of atoms in the (1,1,1) plane by the area of the plane gives:
surface density = N_atoms / area
= 2 / a² = 2 / (5 angstroms)² = 0.16 atoms/angstrom²
Therefore, the surface density of atoms in the (1,1,1) plane of the BCC lattice is 0.16 atoms/angstrom².
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Raghu studies in grade 6th. He wants a cricket bat to be made by a carpenter. He tells the
that the length of the bat should be 7 hand spans. The tall carpenter tells Raghu that it
will be ready by tomorrow. When Raghu went to collect the bat the next day, he was very
disappointed. Why? Was the bat longer or shorter than what Raghu expected? Give reason.
carpenter
Answers
Based on the information given, it can be noted that the bat was either shorter or longer than what he expected.
From the information given, it was stated that Raghu wants a cricket bat to be made by a carpenter and he tells the carpenter that the length of the bat should be 7 hand spans.
Since he got disappointed when he collected the bat, the reason for this will be because the bat was either shorter or longer than what he requested.
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Jane (m=50kg) wants to save Tarzan (m= 80kg) who is standing in the middle of a ring of fire of 5.0 m diameter. Jane has a vine (conveniently attached to a branch right above Tarzan, at a height of 33 m above the ground. Jane holds onto the vine and climbs a tree, growing 16 m away from Tarzan, until she reaches a height of 5.3 m above the ground. She swings down and grabs Tarzan around his waist (1.0m above ground). If they let go of the vine when they reach their highest point, where will they land, relative to Tarzan's original position?
Answers
The height that will illustrate the distance will be d = 6.36m
How to calculate the height?Based on the information given, the length of the vine will be:
L = ✓(16² + 27.7)²
L = 32m
The velocity of Jane when she reaches position B will be:
V = ✓2gh
V = ✓(2 × 9.8 × 4.3)
V = 9.18m/s
We will apply the conversation of momentum. This will be:
50 × 9.18 = (50 + 80)V1
V1 = 3.53m/s
Therefore, the height that will illustrate the distance will be:
31.36² + d² = 32²
d² = 32² - 31.36²
d = 6.36m
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in the process of identifying the alcohol contained in the wine, why does color changed into light blue from brown, to dark green, to light green and finally to light blue?
Answers
Answer:
The color of the Anthocyanins changes depending on the PH of what they come into contact with, because wine already has acid in its Anthocyanins are red. But as soon as you expose those Anthocyanins to more alkaline factors, it will start to turn blue.
Car A uses tires for which the coefficient of static friction is 0.384 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 16.7 m/s. Car B uses tires for which the coefficient of static friction is 0.809 on the same curve. What is the maximum speed at which car B can negotiate the curve
Answers
hydraulic lift is to be used to lift a 2100-kg weight by putting a weight of 25 kg on a piston with a diameter of 10 cm. Determine the diameter of the piston on which the weight is to be placed.
Answers
Answer:
840 cm
Explanation:
Note: A hydraulic press operate based on pascal's principle.
From pascal's principle
W₁/d₁ = W₂/d₂...................... Equation 1
Where W₁ and W₂ are the first and second weight, and d₁ and d₂ are the first and second diameter of the piston.
make d₁ the subject of the equation
d₁ = W₁×d₂/W₂................ Equation 2
Given: W₁ = 2100 kg, W₂ = 25 kg, d₂ = 10 cm = 0.1 m.
Substitute these values into equation 2
d₁ = 2100(0.1)/25
d₁ = 8.4 m
d₁ = 840 cm
7. Particle A (mass = m, charge = Q) and B (mass = m, charge = 5 Q) are released from rest with the distance between them equal to 1.0 m. If Q = 12 C, what is the kinetic energy of particle B at the instant when the particles are 3.0 m apart?
Ans: 4.32J
Answers
The kinetic energy of particle B at the instant when the particles are 3.0 m apart is 4.32 J.
How to determine kinetic energy?The total energy of the system is conserved. The initial energy of the system is the electrostatic potential energy, which is given by:
U = k × (Q₁ × Q₂) / r
where:
U = potential energy in joules
k = Coulomb's constant (8.988 x 10⁹ N m²/C²)
Q₁ and Q₂ = charges in coulombs
r = distance between the charges in meters
In this case:
U = 8.988 x 10⁹ N m²/C² × (12 C × 5 Q) / (1.0 m) = 5.375 x 10⁻⁷ J
The final energy of the system is the kinetic energy of particle B. The kinetic energy is given by:
KE = 1/2 × m × v²
where:
KE = kinetic energy in joules
m = mass in kilograms
v = velocity in meters per second
Solve for the velocity of particle B using the conservation of energy equation:
KE = U
Substituting the expressions for KE and U gives:
1/2 × m × v² = 5.375 x 10⁻⁷ J
Solving for v gives:
v = √(2 × 5.375 x 10⁻⁷ J / m)
= 1.53 m/s
The kinetic energy of particle B is then:
KE = 1/2 × m × v²
= 1/2 × m × (1.53 m/s)²
= 4.32 J
Therefore, the kinetic energy of particle B at the instant when the particles are 3.0 m apart is 4.32 J.
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The valid digits in a measurement are called the significant digits. True or False
Answers
i think
Answer:
physics. The ______ is a systematic way to observe, experiment, and analyze the world. scientific method. The valid digits in a measurement are called the. significant digits.
Explanation:
truth'
Choose the correct statements.A.Breaking bonds is endothermic.B.Making bonds is exothermic.C.Making bonds is endothermic.D.Breaking bonds is exothermic.
Answers
From the given choices, let's choose the correct statement.
Endothermic process can be said to be a reaction where energy is taken in from the surroundings. In this process there is a decrease in the surroundings temperature.
Exothermic process can be said to be a reaction whereby energy is transferred to the surroundings.
Let's verify each statement starting from option A.
• A. Breaking bonds is endothermic.
In bond breaking, energy is required. Hence, we can say it is an endothermic process.
This statement is correct.• B. Making bonds is exothermic.
In making of bonds, energy is released. Since energy is released, we can say bond making is an exothermic process.
This statement is correct.• C. Making bonds is endothermic.
With reference to option B above, bond making is an exothermic process not an endothermic process.
This statement is INCORRECT.
• D. Breaking bonds is exothermic.
With reference to option A, bond breaking is an endothermic process and not exothermic.
This statement is INCORRECT.
Therefore, the correct statements are:
• A. Breaking bonds is endothermic
,• B. Making bonds is exothermic
ANSWER:
• A. Breaking bonds is endothermic
,• B. Making bonds is exothermic
suppose photons are produced in a cathode ray tube (crt) from electrons which are accelerated across a potential of 22.5 kv. What is the maximum energy, in electron volts, of the photons? What is the maximum frequency, in hertz, of these photons?
Answers
The maximum energy of the photons is 3.710⁻¹⁵ joule.
Given,
Voltage= 22.5 = 22500 V
q= 1.6 × 10⁻¹⁹ coulombs
Energy= qV
E= 3.710⁻¹⁵ joule
Energy is the ability to perform work in physics. Different shapes, such as potential, kinetic, thermal, electrical, chemical, radioactive, etc., may be assumed by it. Other instances of energy being transmitted from one body to another include heat and work. Energy is always distributed after it has been transferred in accordance with its type. Thus, heat transfer could result in thermal energy, whereas work could result in mechanical energy.
Motion is a trait shared by all forms of energy. For instance, if a body is moving, it possesses kinetic energy. Due to the object's design, which integrates potential energy, a tensioned object, such a spring or bow, has the ability to move even when at rest.
Therefore, the maximum energy of the photons is 3.710⁻¹⁵ joule.
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Which of the following is 8000 written in scientific notation?
O 8x 102
8x 103
0.8 x 104
80 x 102
Answers
Answer:
2nd option is correct.Explanation:
8000= 8 × 10^3
PLEASE ANSWER THIS QUICK
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Rust is a compound that occurs when the element iron and oxygen combine. Do they create a physical or a chemical change?
Answers
Answer:
I think it's a chemical change.
Could someone please help me? If you wear kneepads when skating, after a fall to your knees, it will take 3 times as long for them to come to a rest. How does this affect the change in momentum of your knees during the fall?
Answers
The change in momentum of your knees during the fall is the same with or without the kneepads.
option B is the correct answer.
What is law of conservation of linear momentum?
The law of conservation of linear momentum states that in an isolated system, the total momentum of the system is conserved.
The sum of the initial momentum of the system is equal to sum of the final momentum of the system.
Pi = Pf
where;
Pi is the initial momentum of the systemPf is the final momentum of the systemThus, according the law of conservation of linear momentum, the change in the momentum of the skater is constant. That is the change in momentum is the same with or without the kneepads.
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What is the acceleration of Karla's I Phone being thrown from Mr. Higley's classroom at 0m/s if it hits the wall 1.2 seconds later going 35 m/s?
Answers
The acceleration of Karla's I IPhone being thrown from Mr. Higley's classroom at 0 m/s will be 29.16 m/s²
What is acceleration?The rate of velocity change concerning time is known as acceleration. According to Newton's second law, the eventual effect of all forces applied to a body is its acceleration.
The pace at which a body's velocity varies is represented by acceleration, which is a vector quantity.
The given data in the problem is given by ;
u is the initial speed = 0 m/sec
v is the final speed= 35 m/sec
t is the time interval= 1.2 second
a is the acceleration=? m/sec²
The formula for acceleration is;
\(\rm a=\frac{v-u}{t} \\\\ a= \frac{35-0}{1.2} \\\\ a= 29.16 \ m./s^2\)
Hence, the acceleration of Karla's iPhone being thrown from Mr. Higley's classroom at 0 m/s will be 29.16 m/s²
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Car A is moving at a speed of 45km/h towards car B which is moving at a speed of 55km/h. if the two car were initially separated at a distance of 150km, determine how long it will take the two cars to meet?
Answers
The time taken by the cars to meet is 5.4 x 10³ s.
Speed of car A, v₁ = 45 km/h = 12.5 m/s
Speed of car B, v₂ = 55 km/h = 15.27 m/s
Distance between the cars, d = 150 km = 15 x 10⁴m
The expression for the time taken by the cars to meet can be given as,
Time = Distance/Average speed
t = d/(v₁ + v₂)
Applying the values of d, v₁ and v₂.
t = 15 x 10⁴/(12.5 + 15.27)
t = 15 x 10⁴/27.77
t = 5.4 x 10³ s
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What does it mean when there is a physical change?
3
A
Matter has changed from one substance into another.
B
Matter has changed the molecular level.
C
A new substance has been formed.
D
Matter has changed size, shape or form.
Answers
Answer:
D.matter has changed size,shape, or form
Explanation:
hope it helps<333
Answer:
Chemists make a distinction between two different types of changes that they study—physical changes and chemical changes. Physical changes are changes that do not alter the identity of a substance. Chemical changes are changes that occur when one substance is turned into another substance
Explanation:
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How much would a 10 kg suitcase weigh on the surface of…?