Question 1

Padded dashboards in cars are safer in an accident than nonpadded ones because an occupant hitting the dash has

Accepted Answer

A) increased time of impact. 
B) decreased time of impact. 
C) decreased impulse. 
D) increased momentum. 
A) increased time of impact. 
B) decreased time of impact. 
C) decreased impulse. 
D) increased momentum.

Question 2

A car traveling along the highway needs a certain amount of force exerted on it to stop it in a certain distance.More stopping force is required when the car has

Accepted Answer

A) more mass. 
B) more momentum. 
C) less stopping distance. 
D) all of these 
E) none of these 
A) more mass. 
B) more momentum. 
C) less stopping distance. 
D) all of these 
E) none of these

Question 3

Which would produce more force: driving into a very massive concrete wall with no "give," or having a head-on collision at the same speed with an identical car moving toward you with the same speed?

Accepted Answer

A) car 
B) wall 
C) both the same 
D) impossible to predict without additional information 
A) car 
B) wall 
C) both the same 
D) impossible to predict without additional information

Question 4

A bullet is fired from a gun.The speed of the bullet will be about the same as the speed of the recoiling gun

Accepted Answer

A) because momentum is conserved. 
B) because velocity is conserved. 
C) because both velocity and momentum are conserved. 
D) if the mass of the bullet equals the mass of the gun. 
E) none of these 
A) because momentum is conserved. 
B) because velocity is conserved. 
C) because both velocity and momentum are conserved. 
D) if the mass of the bullet equals the mass of the gun. 
E) none of these

Question 5

If a monkey floating in outer space throws his hat away,the hat and the monkey will both

Accepted Answer

A) move away from each other,but at different speeds. 
B) move away from each other at the same speed. 
C) move a short distance and then slow down. 
D) move a short distance and then go faster. 
E) come to a stop after a few minutes. 
A) move away from each other,but at different speeds. 
B) move away from each other at the same speed. 
C) move a short distance and then slow down. 
D) move a short distance and then go faster. 
E) come to a stop after a few minutes.

Question 6

A heavy truck and a small car rolling down a hill at the same speed are forced to stop in the same amount of time.Compared to the force that stops the car,the force needed to stop the truck is

Accepted Answer

A) greater. 
B) smaller. 
C) the same. 
A) greater. 
B) smaller. 
C) the same.

Question 7

The force on an apple hitting the ground depends upon

Accepted Answer

A) the speed of the apple just before it hits. 
B) the time of impact with the ground. 
C) whether or not the apple bounces. 
D) all of these 
A) the speed of the apple just before it hits. 
B) the time of impact with the ground. 
C) whether or not the apple bounces. 
D) all of these

Question 8

Momentum is transferred to the ground when an apple falls on it.The momentum absorbed by the ground is

Accepted Answer

A) negligible compared to the momentum of the apple. 
B) greater than that of the apple only if the apple bounces. 
C) greater than that of the apple in all cases. 
D) none of these 
A) negligible compared to the momentum of the apple. 
B) greater than that of the apple only if the apple bounces. 
C) greater than that of the apple in all cases. 
D) none of these

Question 9

The force that accelerates a rocket in outer space is exerted on the rocket by the

Accepted Answer

A) rocket's nose cone. 
B) rocket's wings. 
C) atmospheric pressure. 
D) exhaust gases. 
E) none of these 
A) rocket's nose cone. 
B) rocket's wings. 
C) atmospheric pressure. 
D) exhaust gases. 
E) none of these

Question 10

Two objects have the same size and shape,but one is much heavier than the other.When they are dropped simultaneously from a tower,they reach the ground at the same time,but the heavier one has a greater

Accepted Answer

A) speed. 
B) acceleration. 
C) momentum. 
D) all of these 
E) none of these 
A) speed. 
B) acceleration. 
C) momentum. 
D) all of these 
E) none of these

Question 11

The impulse-momentum relationship is a direct result of

Accepted Answer

A) Newton's 1st law. 
B) Newton's 2nd law. 
C) Newton's 3rd law. 
D) Newton's 4th law. 
A) Newton's 1st law. 
B) Newton's 2nd law. 
C) Newton's 3rd law. 
D) Newton's 4th law.

Question 12

A 1-kg chunk of putty moving at 1 m/s collides with and sticks to a 5-kg bowling ball initially at rest.The bowling ball and putty then move with a momentum of

Accepted Answer

A) 0 kg m/s. 
B) 1 kg m/s. 
C) 2 kg m/s. 
D) 5 kg m/s. 
E) more than 5 kg m/s. 
A) 0 kg m/s. 
B) 1 kg m/s. 
C) 2 kg m/s. 
D) 5 kg m/s. 
E) more than 5 kg m/s.

Exam 6: Momentum

Padded dashboards in cars are safer in an accident than nonpadded ones because an occupant hitting the dash has

A car traveling along the highway needs a certain amount of force exerted on it to stop it in a certain distance.More stopping force is required when the car has

Which would produce more force: driving into a very massive concrete wall with no "give," or having a head-on collision at the same speed with an identical car moving toward you with the same speed?

A bullet is fired from a gun.The speed of the bullet will be about the same as the speed of the recoiling gun

If a monkey floating in outer space throws his hat away,the hat and the monkey will both

A heavy truck and a small car rolling down a hill at the same speed are forced to stop in the same amount of time.Compared to the force that stops the car,the force needed to stop the truck is

The force on an apple hitting the ground depends upon

Momentum is transferred to the ground when an apple falls on it.The momentum absorbed by the ground is

The force that accelerates a rocket in outer space is exerted on the rocket by the

Two objects have the same size and shape,but one is much heavier than the other.When they are dropped simultaneously from a tower,they reach the ground at the same time,but the heavier one has a greater

The impulse-momentum relationship is a direct result of

A 1-kg chunk of putty moving at 1 m/s collides with and sticks to a 5-kg bowling ball initially at rest.The bowling ball and putty then move with a momentum of

About Science

Newtons First Law of Motion: Inertia

Linear Motion

Newtons Second Law of Motion: Force and Acceleration

Newtons Third Law of Motion: Action and Reaction

Energy

Rotational Motion

Gravity

Projectile and Satellite Motion

Atomic Nature of Matter

Solids

Liquids

Gases and Plasmas

Temperature,heat,and Expansion

Heat Transfer

Change of Phase

Thermodynamics

Vibrations and Waves

Sound

Musical Sounds

Electrostatics

Electric Current

Magnetism

Electromagnetic Induction

Properties of Light

Color

Reflection and Refraction

Light Waves

Light Emission

Light Quanta

The Atom and the Quantum

Atomic Nucleus and Radioactivity

Nuclear Fission and Fusion

Special Theory of Relativity

General Theory of Relativity

Filters