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Forces and Newton's Laws review

Total questions: 48

Worksheet time: 26mins

Name
Class
Date
1.
During a demonstration of Newton’s laws of motion, a student used the setup shown in Figure 1. The student flicked the index card with a fingertip, and the coin fell straight down into a plastic cup as shown in Figure 2. Which of these best explains why the coin fell straight down into the cup instead of remaining on the index card?
a)
The coin was at rest until the card was removed, so it tended to remain in the same location. Once the card was gone, the unbalanced force of gravity caused the coin to fall.
b)
Moving the card applied an action force on the coin. Since the card was gone, gravity applied a reaction force on the coin.
c)
The card had less mass than the coin, so a smaller force of gravity acted on the card. The larger force of gravity on the coin made it fall.
d)
The acceleration of the coin falling into the cup was equal and opposite to the acceleration of the card.
2.

A truck and a car are both broke down on Eagle Parkway. Which one would require the least amount of force to push out of the way and why?

a)

The car, because it has less mass

b)

The truck, because it has more mass

c)

The car, because it has smaller tires

d)

The truck, because it has bigger tires

3.

As a toy car moves down a ramp, the speed increases. This is due to _____ .

a)

balanced forces

b)

unbalanced forces

c)

friction

d)

inertia

4.

What is the mass of an object if it is accelerating at 2.0 m/sec/sec after being pushed with a force of 10 N? (Do not include the units.)

(a)  

5.

What is the force exerted on a 10 kg object accelerating at 2.0 m/sec/sec? (Do not include the units.)

(a)  

6.

If the mass of an object does not change, what would be the effect of pushing with a greater force?

a)

The acceleration would increase.

b)

The acceleration would decrease.

c)

The acceleration would not change.

7.

Which of the following situations are an example of a balanced force?

a)

book sitting on a desk

b)

car slowing down to stop

c)

plane flying at a constant speed

d)

a football left on the field

8.

Which of the following are an example of Newton's Law of Action-Reaction?

a)

bus riders moving forward in the seat after the bus stops suddenly

b)

a bowling ball requires more force to throw than a basketball

c)

a rocket taking off from the surface of the Earth

9.

Which of the following are an example of Newton's Law of Inertia?

a)

bus riders moving forward in the seat after the bus stops suddenly

b)

a bowling ball requires more force to throw than a basketball

c)

a rocket taking off from the surface of the Earth

10.

Which of the following are an example of Newton's Law of Force and Acceleration?

a)

bus riders moving forward in the seat after the bus stops suddenly

b)

a bowling ball requires more force to throw than a basketball

c)

a rocket taking off from the surface of the Earth

11.

What is the net force acting on this box? (Do not include units in your answer.)

(a)  

12.

What force must be exerted on the soccer ball to exert it at 5 m/sec/sec?

(a)  

13.

Which of Newton's Laws of Motion is demonstrated in this picture?

a)

Newton's Laws of Inertia

b)

Newton's Laws of Force and Acceleration

c)

Newton's Law Action-Reaction

14.
A push or a pull.
a)
Force
b)
Friction
c)
Weight
d)
Gravity
15.
This type of friction is due to the microscopic roughness of two surfaces.
a)
Rolling
b)
Sliding
c)
Static
d)
Newton
16.
This type of friction is between the ground and a wheel allows the wheel to roll. 
a)
Static
b)
Rolling
c)
Sliding
d)
Newton
17.
This type of friction prevents an object from moving when a force is applied. 
a)
Sliding
b)
Rolling
c)
Static
d)
Newton
18.
This is reached when the force of gravity is balanced by air resistance. 
a)
Centripetal Force
b)
Static
c)
Terminal Velocity
d)
Net Force 
19.
The attractive force between two objects.
a)
Force
b)
Gravity
c)
Direction
d)
Rolling
20.
What is the formula for force? 
a)
F=ma
b)
F=pma
c)
F=ra
d)
F=newtons
21.
What law of motion does this picture represent?
a)
Newtons 1st law
b)
Newtons 4th law 
c)
Newtons 3rd law 
d)
Newtons 2nd law
22.
A net force of 15 N is exerted on an encyclopedia to cause it to accelerate at a rate of 5 m/s2. Determine the mass of the encyclopedia?
a)
 m = 3.0 kg
b)
m = 4.0 kg 
c)
m = 3.0 ml 
d)
m = 30.0 g
23.
What Newtons law does this picture represent
a)
Newtons 2nd law 
b)
Law of gravity 
c)
Newtons 1st law
d)
Newtons 5th law
24.
Mass is a measure of an object's inertia. Objects with greater mass have a greater inertia; objects with less mass have less inertia.
a)
true 
b)
false 
25.
What is the tendency of an object to resist a change in motion?
a)
coffee
b)
motion
c)
inertia
d)
gravity
26.

The upward force on an object falling through the air is__________

a)

air resistance

b)

inertia

c)

momentum

d)

terminal velocty

27.

The acceleration due to gravity is _____.

a)

98 m/s^2

b)

9.8 m/s^2

c)

9.8 m/s

d)

0.98 m/s

28.

When an object moves in a circular path, it accelerates toward the center of the circle as a result of _________.

a)

frictional force

b)

gravitational force

c)

momentum

d)

centripetal acceleration

29.
What is the net force?
a)
4.2 N left
b)
4.2 N right
c)
2.2 N left
d)
2.2 N right
30.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
31.

A car is of mass 15kg is travelling east at a velocity of 3m/s. the value of its momentum is:

a)

30kg.m.s-1

b)

45kg.m.s-1

c)

18kg.m.s-1

d)

5kg.m.s-1

32.

To increase acceleration, you need to increase

a)

mass

b)

force

c)

momentum

d)

velocity

33.

Newton's third law deals with _________ forces.

a)

frictional

b)

centripital

c)

action-reaction

d)

gravitational

34.

What is the net force on the object?

a)

50 N up

b)

100 N up

c)

20 N right

d)

20 N left

35.

F= ma goes with which of Newton's Laws?

a)

first

b)

second

c)

third

36.

Inertia depends only on...

a)

shape

b)

weight

c)

applied force

d)

mass

37.

Inertia is...

a)

An applied force.

b)

The tendency of objects to resist change in motion (keep doing what their doing).

c)

A type of acceleration.

d)

A type of friction.

38.

For every force, there is an equal and opposite force. What is EQUAL?

a)

The size of the forces.

b)

The direction of the forces.

c)

The type of forces.

d)

The motion of the objects.

39.

For every force, there is an equal and opposite force. What is OPPOSITE?

a)

The size of the forces.

b)

The direction of the forces.

c)

The type of forces.

d)

The motion of the objects.

40.

A force is a hammer pushing down on a nail. What is its "equal and opposite" force?

a)

The nail being pushed down into the wood.

b)

The air pushing up on the hammer.

c)

The hand pushing down on the hammer.

d)

The nail pushing up on the hammer.

41.

A ball rolls into a wall with 20 N of force. What is the size of the force that the wall applies to the ball?

a)

Greater than 20 N

b)

Less than 20 N

c)

0 N

d)

20 N

42.

A child is pulling a wagon. If the child increases the force on the wagon, what will happen to the acceleration?

a)

Acceleration increases

b)

Acceleration decreases

c)

Acceleration stays the same

43.

Air is rushing out of a balloon. The balloon pushes air to the left. What is the "equal and opposite" force?

a)

The balloon gets smaller.

b)

The balloon moves to the left.

c)

Air pushes the balloon upward.

d)

Air pushes the balloon to the right.

44.

The unit for mass is...

a)

Newton (N)

b)

kilogram (kg)

c)

meters per second squared (m/s2)

d)

meters per second (m/s)

45.

The unit for force is...

a)

Newton (N)

b)

kilogram (kg)

c)

meters per second squared (m/s2)

d)

meters per second (m/s)

46.

The unit for acceleration is...

a)

Newton (N)

b)

kilogram (kg)

c)

meters per second squared (m/s2)

d)

meters per second (m/s)

47.

You push a box using a force of 70 N. The box has a mass of 10 kg. What is its acceleration?

a)

700 m/s2

b)

60 m/s2

c)

80 m/s2

d)

7 m/s2

48.

How prepared do you feel for the test on Monday?

a)
b)
c)
d)

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