What is an inelastic collision?

A. when objects stick together after impact, and their internal energy is not conserved

B. when objects stick together after impact, and their internal energy is conserved

C. when objects stick together after impact, and always come to rest instantaneously after collision

D. when objects stick together after impact, and their internal energy increases

Can we use the equation F_ net = Δp / Δt when the mass is constant?

D. Yes, and the resultant equation is F = ma

A. No, because the given equation is applicable for the variable mass only.

B. No, because the given equation is not applicable for the constant mass.

C. Yes, and the resultant equation is F = mv

In the equation p₁ + p₂ = p₁' + p₂' for the collision of two objects, what is the assumption made regarding the friction acting on the objects?

D. Friction before and after the impact remains the same.

Cars these days have parts that can crumple or collapse in the event of an accident. How does this help protect the passengers?

A. It reduces injury to the passengers by increasing the time of impact.

B. It reduces injury to the passengers by decreasing the time of impact.

C. It reduces injury to the passengers by increasing the change in momentum.

D. It reduces injury to the passengers by decreasing the change in momentum.

How can you express impulse in terms of mass and initial and final velocities?

B. Δp / Δt = ( m(v_f − v_i ) )/ Δt

D. Δp / Δt = 1/m ( (v_f − v_i ) )/ Δt

If both mass and velocity of an object are constant, what can you tell about its impulse?

A. Its impulse would be constant.

C. Its impulse would be increasing.

D. Its impulse would be decreasing.

Consider two objects of the same mass. If a force of 100 N acts on the first for a duration of 1 s and on the other for a duration of 2 s, which of the following statements is true?

B. The second object will acquire more momentum.

A. The first object will acquire more momentum.

C. Both objects will acquire the same momentum.

D. Neither object will experience a change in momentum.

A ball rolling on the floor with momentum p₁ collides with a stationary ball and sets it in motion. The momentum of the first ball becomes p₁', and that of the second becomes p₂'. Compare the magnitudes of p₁ and p₂'.

C. The magnitude of p₁ is greater than that of p₂'.

A. Momenta p₁ and p₂' are the same in magnitude.

B. The sum of the magnitudes of p₁ and p₂' is zero.

D. The magnitude of p₂' is greater than that of p₁.

Why does it hurt less when you fall on a softer surface?

A. The softer surface increases the duration of the impact, thereby reducing the effect of the force.

B. The softer surface decreases the duration of the impact, thereby reducing the effect of the force.

C. The softer surface increases the duration of the impact, thereby increasing the effect of the force.

D. The softer surface decreases the duration of the impact, thereby increasing the effect of the force.

Two cars are moving in the same direction. One car with momentum p₁ collides with another, which has momentum p₂. Their momenta become p₁' and p₂' respectively. Considering frictional losses, compare (p₁' + p₂') with (p₁ + p₂).

C. The value of (p₁ + p₂) will be greater than (p₁' + p₂').

A. The value of (p₁' + p₂') is zero.

B. The values of (p₁ + p₂) and (p₁' + p₂') are equal.

D. The value of (p₁' + p₂') will be greater than (p₁ + p₂).

Two people, who have the same mass, throw two different objects at the same velocity. If the first object is heavier than the second, compare the velocities gained by the two people as a result of recoil.

A. The first person will gain more velocity as a result of recoil.

B. The second person will gain more velocity as a result of recoil.

C. Both people will gain the same velocity as a result of recoil.

D. The velocity of both people will be zero as a result of recoil.

Two objects having equal masses and velocities collide with each other and come to a rest. What type of a collision is this and why?

B. Inelastic collision, because internal kinetic energy is not conserved

A. Elastic collision, because internal kinetic energy is conserved

C. Elastic collision, because internal kinetic energy is not conserved

D. Inelastic collision, because internal kinetic energy is conserved

When the momentum of an object increases with respect to time, what is true of the net force acting on it?

C. It is nonzero, because the net force is equal to the rate of change of the momentum.

A. It is zero, because the net force is equal to the rate of change of the momentum.

B. It is zero, because the net force is equal to the product of the momentum and the time interval.

D. It is nonzero, because the net force is equal to the product of the momentum and the time interval.

Why do we use average force while solving momentum problems? How is net force related to the momentum of the object?

D. Forces are usually not constant over a period of time, and net force acting on the object is equal to the rate of change of the momentum.

A. Forces are usually constant over a period of time, and net force acting on the object is equal to the rate of change of the momentum.

B. Forces are usually not constant over a period of time, and net force acting on the object is equal to the product of the momentum and the time interval.

C. Forces are usually constant over a period of time, and net force acting on the object is equal to the product of the momentum and the time interval.

What is the difference between momentum and impulse?

C. Momentum is the product of mass and velocity. Impulse is the change in momentum.

A. Momentum is the sum of mass and velocity. Impulse is the change in momentum.

B. Momentum is the sum of mass and velocity. Impulse is the rate of change in momentum.

D. Momentum is the product of mass and velocity. Impulse is the rate of change in momentum.

Can a lighter object have more momentum than a heavier one? How?

C. Yes, if the lighter object’s velocity is considerably high.

A. No, because momentum is independent of the velocity of the object.

B. No, because momentum is independent of the mass of the object.

D. Yes, if the lighter object’s velocity is considerably low.

A driver sees another car approaching him from behind. He fears it is going to collide with his car. Should he speed up or slow down in order to reduce damage?

C. He should speed up and then slow down just before the collision.

D. He should slow down and then speed up just before the collision.

Linear Momentum Quiz(izz) from OpenStax

Quiz

•

Physics

•

10th Grade

•

Practice Problem

•

Hard

•

NGSS

HS-PS2-2

Standards-aligned

Albert Valderrama

Used 7+ times

FREE Resource

38 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is impulse?

A. Change in velocity

B. Change in momentum

C. Rate of change of velocity

D. Rate of change of momentum

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which equation of Newton’s second law is mass assumed to be constant?

A. F=ma

B. F= Δp / Δt

C. F=ΔpΔt

D. F= Δm / Δa

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the SI unit of momentum?

A. N

B. kg ⋅ m

C. kg ⋅ m/s

D. kg ⋅ m/s^2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the equation for linear momentum?

A. p=mv

B. p=m/v

C. p=mv^2

D. p=1/2mv^2

What kind of quantity is momentum?

A. Scalar

B. Vector

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is an isolated system?

A. A system in which the net internal force is zero

B. A system in which the net external force is zero

C. A system in which the net internal force is a nonzero constant

D. A system in which the net external force is a nonzero constant

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Give an example of an isolated system.

A. A cyclist moving along a rough road

B. A figure skater gliding in a straight line on an ice rink

C. A baseball player hitting a home run

D. A man drawing water from a well

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Linear Momentum Quiz(izz) from OpenStax

38 questions

What is impulse?

In which equation of Newton’s second law is mass assumed to be constant?

What is the SI unit of momentum?

What is the equation for linear momentum?

What kind of quantity is momentum?

What is an isolated system?

Give an example of an isolated system.

What is an inelastic collision?

In which type of collision is kinetic energy conserved?

Two objects having equal masses and velocities collide with each other and come to a rest. Is momentum conserved in this case?

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