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8th Grade Physics Review

Total questions: 25

Worksheet time: 18mins

Name
Class
Date
1.

Which two triangles are correct?

a)

1 & 4

b)

2 & 3

c)

2 & 4

d)

1 & 2

2.
A runner races in the 100 meter dash.  It takes her 10 seconds to finish.  What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
3.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
4.
Shona cycles at an average speed of 8km/h. How far has she travelled if she cycles for 4 hours?
a)
55km
b)
32km
c)
43km
d)
32miles
5.

What would the distance vs time graph look like for an object travelling at a constant velocity?

a)

Horizontal line

b)

Straight line

c)

Curved line

6.

When was the object at rest?

a)

first 10 seconds

b)

first 20 seconds

c)

20th ~30th seconds

d)

30th~40th seconds

7.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
8.
Acceleration is
a)
increasing speed
b)
decreasing speed
c)
changing direction
d)
all of the above
9.
Which has more Inertia? (so need more force to move) 
a)
Truck
b)
Ant
c)
A cat
d)
A skateboard
10.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion. 
d)
Friction 
11.
When the net force is zero, the forces on an object are balanced. True or false.
a)
true
b)
false
12.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
13.

How will this object move?

a)

It will move left at a constant speed.

b)

It will accelerate to the right.

c)

It will accelerate to the left.

d)

It will move right at a constant speed.

14.
The sum of all forces acting on an object and direction
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
15.
What is the net force of an object that is not moving?
a)
0N
b)
100N
c)
Upward force
16.

Unit for time

a)

Meter

b)

Second

c)

Meter/Second

d)

Meter/Second2

17.

Unit for Speed

a)

Meter

b)

Second

c)

Meter/Second

d)

Meter/Second2

18.

Unit for Acceleration

a)

Newton

b)

Kilogram

c)

Meter and Vector for direciton

d)

Meter/Second2

19.

Unit for Force

a)

Newton

b)

Kilogram

c)

Meter and Vector for direciton

d)

Meter/Second2

20.

Unit for mass

a)

Newton

b)

Kilogram

c)

Meter and Vector for direciton

d)

Meter/Second2

21.

A ball at the top of a hill has ________ ________ because if pushed it will roll down the hill.

a)

Mechanical Force

b)

Unbalanced Energy

c)

Potential Gravitational Energy

d)

Unbalanced Force

22.

When a student runs and kicks a ball, they have applied an ___________ force to move the ball.

a)

Balanced

b)

Magnetic

c)

Spring

d)

Unbalanced

23.

Standing still is an example of a ________ ________ since you are not moving forward, backward, or sideways.

a)

negative acceleration

b)

balanced force

c)

unbalanced force

d)

3rd law of motion

24.

What form of energy does a microwave have?

a)

Magnetic

b)

Electromagnetic

c)

Solar

d)

Elastic

25.

You are in a car driving and the breaks are applied, you fly forward, which Law is this?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

d)

Newton's 2nd and 3rd law