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Newton's Three Laws of Motion Summary

Total questions: 50

Worksheet time: 4hrs 10mins

Name
Class
Date
1.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
2.
What is the net force?
a)
5.5 N left
b)
5.5 N right
c)
2.5 N left
d)
2.5 N right
3.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
4.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
5.
Balanced or Unbalanced?
a)
Balanced 
b)
Unbalanced
6.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
7.
In which direction will the box accelerate?
a)
Down and to the left
b)
Up and to the right
c)
Up and to the left
d)
Down and to the right
8.
The FORCE that PULLS things down or back to EARTH.
a)
Speed
b)
Gravity
9.

Mass of an object can be defined by...

a)

the size of the object

b)

gravitational pull of the object

c)

the amount of matter in the object

10.

The greater the mass of an object, the greater the amount of ______ is needed to make it accelerate.

a)

Force

b)

Matter

c)

Acceleration

d)

Velocity

11.

According to Newtons Third Law of Motion, every action has an equal and opposite _________.

a)

gravity

b)

force

c)

mass

d)

reaction

12.

In the equation f=ma, "F" stands for _______.

a)

force

b)

mass

c)

velocity

d)

acceleration

13.

What is velocity?

a)

It is only the acceleration of an object

b)

It is the speed AND direction of an object.

c)

Only the direction of an object

d)

None of the above

14.

What is a PUSH or a PULL of an object?

a)

Motion

b)

Friction

c)

Force

d)

Gravity

15.

What causes a ball rolling across a rug to slow to a stop?

a)

The rug doesn't have enough force to hold the ball.

b)

Friction resists the ball's forward motion.

c)

The rug doesn't have enough momentum to keep the ball moving.

d)

The ball isn't moving fast enough.

16.

Who developed the 3 laws of motion?

a)

Bill Nye

b)

Charles Darwin

c)

Albert Einstein

d)

Sir Isaac Newton

17.

The resistance of any physical object to any change in its state of motion or rest.

a)

force

b)

gravity

c)

inertia

18.

The resistance when a surface of an object moves over another surface is known as what?

a)

gravity

b)

force

c)

friction

d)

acceleration

19.
Forces always act in equal and opposite pairs.
a)
Newton's 1st Law
b)
Newton's 3rd Law
c)
Newton's second law
20.
According to Newton's second law, if you increase the force applied to an object :
a)

acceleration increases

b)

nothing happens

c)

it becomes more massive

d)

acceleration decreases

21.

If an object has a small mass, it wouldn't need as strong of a force to accelerate it. Which law does this describe?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

Newton's 4th Law

22.
Which example best explains Newton's Third Law of Motion?
a)
When a glass slid across a table, it spilled water when it stopped suddenly.
b)
An engine used less work to move a lighter car than when it moved a heavier car.
c)
When you sit on a chair, your body exerts a downward force on the surface of the chair, while the chair exerts an equal and upward force on your body. 
23.
What law of motion does this picture represent?
a)
Newtons 1st law
b)
Newtons 4th law 
c)
Newtons 3rd law 
d)
Newtons 2nd law
24.

For falling objects, the acceleration constant due to gravity is...

a)

9.8 m/s2

b)

13.0 m/s2

c)

2.0 m/s2

25.

Match the following

a)

Law of Inertia

1.

Newton's 1st Law

b)

Law of Acceleration

2.

Newton's 2nd Law

c)

Law of Action/Reaction

3.

Newton's 3rd Law

26.

Match the following

a)

static

1.

Friction at Rest

b)

sliding

2.

Friction between objects sliding pass each other

c)

rolling

3.

Friction from use of wheels, ball bearing, etc...

d)

fluid

4.

Friction from liquids or gases

e)

sliding

5.

Friction between the wheels and the road slows your bike to a stop.

27.

The measure of the gravitational force pulling on a mass is

a)

mass

b)

weight

c)

magnetism

28.

Match the following

a)

g or kg

1.

unit for mass

b)

N

2.

unit for force

c)

m/s2

3.

unit for acceleration

29.

Match the following

a)

directly proportional

1.

as one amount increases, another amount increases at the same rate

b)

indirectly proportional

2.

when the value of one quantity increases with respect to a decrease in another or vice-versa

c)

directly proportional

3.

The greater the force that is applied, the greater the acceleration

d)

indirectly proportional

4.

If the same force is applied to an object with a large mass, it will have a lesser acceleration

30.

Force arrows are used to represent the ____________ and direction of the forces.

a)

length

b)

magnitude

c)

distance

d)

inertia

31.

Match the following

a)
1.

Newton's 1st law

b)
2.

Newton's 2nd law

c)
3.

Newton's 3rd law

d)
4.

Newton's 1st law

e)
5.

Newton's 3rd law

32.

Which accurately describes acceleration?

a)

speeding up/slowing down only

b)

slowing down to change direction only

c)

speeding up, slowing down, & changing direction

33.
Newton's Law of Inertia describes the motion of-
a)
Objects at rest only
b)
Objects in motion only
c)
Objects at rest and objects that are in motion
d)
Objects without a mass and resist being set into motion
34.

A baseball bat hits a baseball with a force of 100 Newtons. What is the force and its direction exerted by the ball on the bat?

a)

100 Newtons, same direction

b)

100 Newtons, opposite direction

c)

200 Newtons, opposite direction

d)

200 Newtons, same direction

35.

Friction and air resistance are forces that:

a)

can make an object slow down or stop

b)

pulls an object toward the center of Earth

c)

changes an object's position

d)

can't be described

36.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
37.
The combination of all the forces acting on an object is the...
a)
net force
b)
action force
c)
reaction force
d)
balance force
38.

(Use a=F/m) Jenny applies a 60 N force to a 20 Kg cart, what is the acceleration of the cart if friction can be neglected?

a)

1200 m/s/s

b)

0.33 m/s/s

c)

20 m/s/s

d)

3 m/s/s

39.

(Using Fnet=ma), What net force is required to accelerate a car at a rate of 2 m/s2 if the car has a mass of 3,000 kg?

a)

6,000 N

b)

1,500 N

c)

3,002 N

d)

2,998 N

40.

(Use Fnet=ma), A 10 kg bowling ball would require how much unbalanced force to accelerate down an alleyway at a rate of 3 m/s2?

a)

30 N

b)

13 N

c)

3.3 N

d)

0.3 N

41.

(Use m=F/a). What is the mass of a falling rock if its weight is 147 N? (Acceleration due to gravity = 9.8 m/s2)

a)

15 kg

b)

1,440.6 kg

c)

156.8 kg

d)

137.2 kg

42.

(Use m=F/a). What is the mass of a truck if an unbalanced force of 14,000 N acting on it gives the truck an acceleration of 5 m/s2?

a)

2,800 kg

b)

0.0004 kg

c)

70,000 kg

d)

13,995 kg

43.

(Use m=F/a). What is the acceleration of a softball when it hits a catcher's mitt if the softball has a mass of 0.5 kg and the catcher's mitt exerts a force of 25 N to slow the ball down?

a)

0.5 kg

b)

50 kg

c)

25.5 kg

d)

12.5 kg

44.

(Use a=F/m). Your parents' car has a mass of 2,000 kg. If an unbalanced force of 5,000 N acts on the car, at what rate will the car accelerate?

a)

2.5 m/s2

b)

0.4 m/s2

c)

10,000,000 m/s2

d)

3,000 m/s2

45.

For the scenario, decide if the example is Newton's 1st, 2nd, or 3rd law.

a)

1

b)

2

c)

3

46.

For the scenario, decide if the example is Newton's 1st, 2nd, or 3rd law.

a)

1

b)

2

c)

3

47.

For the scenario, decide if the example is Newton's 1st, 2nd, or 3rd law.

a)

1

b)

2

c)

3

48.

For the scenario, decide if the example is Newton's 1st, 2nd, or 3rd law.

a)

1

b)

2

c)

3

49.

Analyze the image. Decide if what is depicted is true or false.

a)

True

b)

False

50.

 If a 300-N action force is exerted to the right, the reaction force will be

a)

300 N Right

b)

600 N Right

c)

300 N Left

d)

600 N Left

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