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The exact SAME QUESTIONS Along with DETAILED EXPLANATIONS can be found here Online Exam Index Link
by choosing the corresponding  "STUDY GUIDE VERSION"

  Solutions to the WRITTEN QUESTIONS are to be found in the unit answers link

Online Study Guide Part 1  &  Online Study Guide Part 2 

Newton's Laws Exam

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

Galileo found that a ball rolling down one inclined plane would roll how far up another inclined plane?
a.
The ball would not roll up the other plane at all.
b.
To nearly its original height
c.
To about one quarter its original height
d.
To nearly twice its original height
e.
To nearly half its original height
 

 2. 

The law of inertia states that an object
a.
will continue moving at the same velocity unless an outside force acts on it.
b.
will continue moving in a straight line unless an outside force acts on it.
c.
that is not moving will never move unless a force acts on it.
d.
at rest will remain at rest unless acted on by an outside force.
e.
will do all of the above.
 

 3. 

The law of inertia applies to
a.
objects at rest.
b.
moving objects.
c.
both moving and nonmoving objects.
 

 4. 

After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals
a.
zero, since no force is necessary to keep it moving.
b.
twice the force with which it was fired.
c.
one half the force with which it was fired.
d.
the same amount of force with which it was fired.
e.
one quarter the force with which it was fired.
 

 5. 

Compared to its weight on Earth, a 10-kg object on the moon will weigh
a.
the same amount.
b.
less.
c.
more.
 

 6. 

Compared to its mass on Earth, the mass of a 10-kg object on the moon is
a.
the same.
b.
more.
c.
less.
 

 7. 

The mass of a sheep that weighs 110 N is about
a.
1 kg.
b.
11 kg.
c.
110 kg.
d.
1100 kg.
e.
none of the above
 

 8. 

Friction
a.
comes from microscopic bumps that act as obstructions to the object's motion.
b.
is the name given to the force acting between surfaces sliding past one another.
c.
acts in a direction that opposes the motion of an object.
d.
all of the above
e.
none of the above
 

 9. 

A 15-N force and a 45-N force act on an object in opposite directions. What is the net force on the object?
a.
15 N
b.
30 N
c.
45 N
d.
60 N
e.
none of the above
 

 10. 

Equilibrium occurs when
a.
all the forces acting on an object are balanced.
b.
the sum of the +x forces on an object equals the sum of the –x forces.
c.
the net force on the object is zero.
d.
the sum of the upward forces equals the sum of the downward forces.
e.
all of the above
 

 11. 

A bag of sports equipment has a mass of 10.0 kilograms and a weight of
a.
0.98 N.
b.
9.8 N.
c.
98 N.
d.
980 N.
e.
none of the above
 

 12. 

A 5-N force and a 30-N force act in the same direction on an object. What is the net force on the object?
a.
5 N
b.
25 N
c.
30 N
d.
35 N
e.
none of the above
 

 13. 

An object weighs 30 N on Earth. A second object weighs 30 N on the moon. Which has the greater mass?
a.
The one on Earth
b.
The one on the moon
c.
They have the same mass.
d.
Not enough information to say
 

 14. 

How does acceleration of an object change in relation to its mass? It is
a.
directly proportional.
b.
Acceleration doesn't depend on mass at all.
c.
inversely proportional.
 

 15. 

The acceleration produced by a net force on an object is
a.
inversely proportional to the mass of the object.
b.
directly proportional to the magnitude of the net force.
c.
in the same direction as the net force.
d.
all of the above
e.
none of the above
 

 16. 

When an object reaches terminal velocity its acceleration is
a.
0 m/s2.
b.
4.9 m/s2.
c.
9.8 m/s2.
 

 17. 

A heavy person and a light person parachute together and wear the same size parachutes. Assuming they open their parachutes at the same time, which person reaches the ground first?
a.
the light person
b.
the heavy person
c.
Neither -- they both reach the ground together.
 

 18. 

Suppose the force of friction on a sliding object is 25 N. The force needed to maintain a constant velocity is
a.
more than 25 N.
b.
25 N
c.
less than 25 N.
 

 19. 

A book weighs 4 N. When held at rest in your hands, the net force on the book is
a.
0 N.
b.
0.4 N.
c.
4 N.
d.
39 N.
e.
none of the above
 

 20. 

A girl pulls on a 10-kg wagon with a constant force of 20 N. What is the wagon's acceleration?
a.
0.5 m/s2
b.
2 m/s2
c.
10 m/s2
d.
20 m/s2
e.
200 m/s2
 

 21. 

A tennis ball and a solid steel ball with the same diameter are dropped at the same time. Which ball has the greater force acting on it?
a.
The steel ball
b.
The tennis ball
c.
They both have the same force acting on them.
 

 22. 

A tennis ball and a solid steel ball with the same diameter are dropped at the same time. In the absence of air resistance, which ball has the greater acceleration?
a.
The steel ball
b.
The tennis ball
c.
They both have the same acceleration.
 

 23. 

The reason a tennis ball and a solid steel ball will accelerate at the same rate, in the absence of air resistance, is that
a.
they have the same mass.
b.
the ball with the larger force has the smaller mass.
c.
the ball with the larger force also has the larger mass.
d.
the force acting on them is the same.
e.
none of the above
 

 24. 

As a care package falls from a high-flying stationary helicopter, its velocity increases and its acceleration
a.
remains the same.
b.
decreases.
c.
increases.
 

 25. 

If the force acting on a cart doubles, what happens to the cart's acceleration?
a.
It quarters.
b.
It halves.
c.
It stays the same.
d.
It doubles.
e.
It quadruples.
 

 26. 

Suppose a cart is being moved by a force. If suddenly a load is dumped into the cart so that the cart's mass doubles, what happens to the cart's acceleration?
a.
It quarters.
b.
It halves.
c.
It stays the same.
d.
It doubles.
e.
It quadruples.
 

 27. 

A 20-N falling object encounters 4 N of air resistance. The magnitude of the net force on the object is
a.
0 N.
b.
4 N.
c.
16 N.
d.
20 N.
e.
none of the above
 

 28. 

A sportscar has a mass of 1500 kg and accelerates at 5 meters per second squared. What is the magnitude of the force acting on the sportscar?
a.
300 N.
b.
1500 N.
c.
2250 N.
d.
7500 N.
e.
none of the above
 

 29. 

A tow truck exerts a force of 2000 N on a car, accelerating it at 1 m/s/s. What is the mass of the car?
a.
667 kg
b.
1000 kg
c.
2000 kg
d.
8000 kg
e.
none of the above
 

 30. 

You pull horizontally on a 50-kg crate with a force of 450 N and the friction force on the crate is 250 N. The acceleration of the crate is
a.
2 m/s2.
b.
4 m/s2.
c.
9 m/s2.
d.
14 m/s2.
 

 31. 

A jumbo jet cruises at a constant velocity when the total thrust of the engines on the jet is 50,000 N. How much air resistance acts on the jet?
a.
0 N
b.
25,000 N
c.
50,000 N
d.
75,000 N
e.
100,000 N
 

 32. 

Whenever an object exerts a force on another object, the second object exerts a force of the same magnitude, but in the opposite direction to that of the first object.
a.
Sometimes true
b.
Always true
c.
Always false
 

 33. 

Forces always occur
a.
as single quantities.
b.
by themselves.
c.
in pairs.
d.
in triplets.
 

 34. 

A player hits a ball with a bat. The action force is the impact of the bat against the ball. What is the reaction to this force?
a.
The force of the ball against the bat
b.
The weight of the ball
c.
Air resistance on the ball
d.
The grip of the player's hand against the bat
e.
none of the above
 

 35. 

A person is attracted towards the center of Earth by a 440-N gravitational force. The force with which Earth is attracted toward the person is
a.
440 N.
b.
very very small.
c.
very very large.
 

 36. 

An unfortunate bug splatters against the windshield of a moving car. Compared to the force of the car on the bug, the force of the bug on the car is
a.
larger.
b.
the same.
c.
smaller.
d.
Need more information to say
 

 37. 

An unfortunate bug splatters against the windshield of a moving car. Compared to the deceleration of the car, the deceleration of the bug is
a.
larger.
b.
the same.
c.
smaller.
 

 38. 

A large truck and a small car traveling at the same speed have a head-on collision. The vehicle to undergo the greater change in velocity will be
a.
the small car.
b.
the large truck.
c.
neither—both are the same
 

 39. 

Bronco the skydiver falls toward Earth. The attraction of Earth on Bronco pulls him down. The reaction to this force is
a.
Bronco finally pushing against Earth's surface.
b.
Bronco pulling up on Earth.
c.
Earth's surface finally pushing against Bronco.
d.
neither A, B, nor C
 

 40. 

A rocket is able to accelerate in the vacuum of space when it fires its engines. The force that propels the rocket is the force
a.
of the rocket on the exhaust gases.
b.
of the exhaust gases on the rocket.
c.
neither A nor B
 

True/False
Indicate whether the statement is true or false.
 

 41. 

A force can be simply defined as a push or a pull.
 

 42. 

The amount of matter in an object is its weight.
 

 43. 

The SI unit of mass is the newton.
 

 44. 

The force due to gravity acting on an object is its mass.
 

 45. 

The SI unit of force is the kilogram.
 

 46. 

An astronaut weighs the same on Earth as in space.
 

 47. 

An astronaut has the same mass on Earth as in space.
 

 48. 

If a hockey puck were to slide on a perfectly frictionless surface, it will eventually slow down because of its inertia.
 

 49. 

Inertia is the property that every material object has; inertia resists changes in an object's state of motion.
 

 50. 

The combination of all the forces that act on an object is called the net force.
 

 51. 

The acceleration of an object is inversely proportional to the net force acting on it.
 

 52. 

The net force on an objecting falling at terminal velocity is zero.
 

 53. 

The speed of an object dropped in air will continue to increase without limit.
 

 54. 

Whenever one object exerts a force on another object, the second object always exerts a force back on the first object.
 

 55. 

A rocketship is pushed forward by gases that are forced out the back of the ship.
 

 56. 

A bicycle and a parked car have a head-on collision. The force of impact is greater on the bicycle.
 

Essay  These are not graded online.  To check the answers to these click on the answers link on the CP intro page.
 

 57. 

Write a short paragraph on the difference between mass and weight. Give examples.
 

 58. 

Suppose you are on an airplane moving at high speed. If you flip a coin straight up it will land in your lap rather than a great distance behind you. Explain.
 

Problem
 

 59. 

On the surface of Jupiter, the acceleration due to gravity is about 3 times that on Earth. How much would a 0.40-kg rock weigh on Jupiter?
 

 60. 

On the surface of Jupiter, the acceleration due to gravity is about 3 times that of Earth. What would be the mass of a 170-kg rock on Jupiter?
 

 61. 

You push with 10.0 N on a 5.0-kg block and there are no opposing forces. How fast will the block accelerate?
 

 62. 

You push with 27 N on a 10-kg chest, and there is a 7-N force of friction. How fast will the chest accelerate?
 

 63. 

Suppose that you exert 300 N horizontally on a 50-kg crate on a factory floor, where friction between the crate and the floor is 100 N. What is the acceleration of the crate?
 

 64. 

A 60-kg person on in-line skates pushes against a wall with a force of 30 N and recoils. What acceleration does that person experience?
 

 65. 

If we filled our water bottle rockets up with water and compressed air, then took them to outer space where there is no atmosphere, would the rockets still fly away when we released the plug?  Use this example of our rockets to explain Newton’s Third Law.
 



 
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