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SQ4.2 Review (3 Laws of Motion)

Total questions: 45

Worksheet time: 31mins

Name
Class
Date
1.

A frog leaping upward off the lily pad is pulled down by gravity and lands on another lily pad instead of continuing in a straight line.

a)

Newton's 1st Law of Motion (Inertia)

b)

Newton's 2nd Law of Motion F=ma

c)

Newton's 3rd Law of Motion (Action/Reaction)

2.

As the fuel in a rocket ignites, the force of the gas expansion and explosion pushes out the back of the rocket and pushes the rocket forward.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

3.

When you are riding in a car and the car suddenly stops, your body continues to go forward.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

4.

After you start up you go kart, as you give it more gas, it goes faster.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

5.

A pitched baseball goes faster than one that is thrown gently.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

6.

As an ice skater pushes harder with leg muscles, the ice skater begins to move faster.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

7.

Rocky, age 12, and Parker, age 20, skip pebbles on the pond. The pebbles Parker throw go farther and faster than Rocky's.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

8.

When you paddle a canoe, the canoe goes forward.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

9.

A child is pulling a sled and stops. The sled kept moving and hit the child.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

10.

F = ma

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

11.

In which direction and with how much force will an object move if you push to the left with 15N of force and your friend pushes to the right with 5N of force?

a)

up with 10N of force

b)

down with 5N of force

c)

left with 10N of force

d)

right with 10N of force

12.

Which of these is evidence that an unbalanced force is acting on an object?

a)

The mass of the object is changing

b)

The object continues moving in a straight line

c)

The object remains at rest

d)

The motion of the object is changing

13.

Newton's First Law States........

a)

Objects at rest tend to stay at rest unless acted on by an outside force.

b)

Objects accelerate often and it is difficult to know when or how they will accelerate.

c)

Objects in motion tend to stay in motion unless acted on by an outside force.

d)

Both A & C

14.

What is inertia?

a)

An object that is accelerating

b)

Gravitational force

c)

An objects tendency to stay at rest or in motion

d)

An unbalanced force

15.

Newton's second law states.....

a)

If there is more mass then there is more acceleration

b)

An object at rest wants to be in motion

c)

Force = Mass x Acceleration

d)

The force exerted on an object is not related to mass or acceleration

16.

What formula is used to calculate force?

a)

Acceleration = Force x Mass

b)

Force = Mass x Acceleration

c)

Work = Force x Distance

d)

Mass = Force + Acceleration

17.

An object with a mass of 100 kg is observed to accelerate at the rate of 5 m/s2. Calculate the force required to produce this acceleration.

a)

20N

b)

500 M/S

c)

500 Kg

d)

500N

18.

A force of 40 N acts upon a 2 kg block. Calculate the acceleration of the object.

a)

20 m/s2

b)

20 m/s

c)

80 m/s2

d)

80 m/s

19.

Newton's third law states.......

a)

For each action there is a larger reaction associated with it.

b)

None of these choices

c)

For each action there is an equal and opposite reaction.

d)

For each action there is a smaller reaction associated with it.

20.

Stacy is rowing a boat. She wants the boat to move forward. According to Newton's Third Law, in which direction should she move her paddle in the water?

a)

Backwards

b)

Above her head

c)

Forward

d)

East

21.

Forces that are equal in size but in opposite directions are called ______________ forces.

a)

Strong

b)

Crazy

c)

Balanced

d)

Unbalanced

22.

The sum of all forces acting on an object.

a)

Added forces

b)

Net force

c)

forcey force

d)

Equation force

23.
If there are two forces going in the SAME direction, you would ...?
a)
(-) Subtract the forces
b)
(+) Add the forces
c)
Neither
d)
(x) Multiply
24.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
25.
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
26.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
27.
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.
28.
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
29.
What is the net force?
a)
11 N left
b)
11 N right
c)
3 N left
d)
3 N right
30.
The diagram below shows a skateboarder pushing himself forward with a force of 25 N while the wind pushes back with a force of 5 N. How will the skateboarder be affected if the force of the wind increases to 8 N?
a)
The speed of the skateboarder will increase.
b)
The speed of the skateboarder will remain constant.
c)
The speed of the skateboarder will decrease.
d)
The skateboarder will come to a stop.
31.
Forces that have a net force of zero ( the object is still).
a)
Balanced force
b)
Unbalanced force
32.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
33.

If both people are exerting a force of 30 N, what is the net force?

a)

30 N to the right

b)

60 N to the right

c)

300 N to the right

d)

0 N to the right

34.

Calculate the net force acting on the box

a)

9N to the right

b)

3N to the right

c)

9N to the left

d)

3N to the left

35.

Calculate the net force acting on the box

a)

9N to the right

b)

5N to the right

c)

9N to the left

d)

5N to the left

36.

This list below includes six different scenarios. Which objects in the list experience an unbalanced force (select all that apply)?

a)

The Marble

b)

The Ball

c)

The Cat

d)

The Flag

e)

The Book

37.

State whether work is done or not.

a)

Yes

b)

NO

38.

State whether work is done or not.

a)

Yes

b)

NO

39.

State whether work is done or not.

a)

Yes

b)

NO

40.

State whether work is done or not.

a)

Yes

b)

NO

41.

which of the following shows greatest work done?

a)

sleeping

b)

watching TV

c)

doing the laundry

42.
Which of the following is the best example of work being done. 
a)
doing homework
b)
lifting a box
c)
pushing a stationary box
d)
holding a box
43.
In which of these cases is work being done? 
a)
A student sleeps
b)
A student pushes a locked door that does not move
c)
a student carries his chair into another room
d)
A student sits on the carpet
44.

Carrying a baby

a)

Work

b)

No Work

45.

Pushing a box across the room

a)

Work

b)

No Work

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