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BJU Chapter 9- Motion and Machines

Total questions: 55

Worksheet time: 1hrs 26mins

Name
Class
Date
1.
You hit a wall with a stick.  The equal but opposite reaction is _____
a)
the wall pushes against you
b)
the stick pushes against you
c)
you push against the stick
d)
the wall pushes against the stick
2.
A person is pushed forward into their seat belt when a car stops quickly.  Which law is this?
a)
1st
b)
 2nd
c)
2 and 3
d)
3rd 
3.
An object at rest will _______ if no outside forces are applied.
a)
stay at rest
b)
increase velocity
c)
decrease mass
d)
fall to the ground
4.
What is Newton's First Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
5.
What is Newton's Third Law?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
6.
What is the name for a push or pull?
a)
movement
b)
force
c)
speed
d)
density
7.
Which law explains why a person in a car slides to the right when going through a very sharp left turn on the highway. 
a)
1st Law
b)
2nd Law
c)
3rd Law
8.
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which law best explains this situation?
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
d)
Conservation of momentum
9.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
10.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
11.
An object at rest will _______ if no outside forces are applied.
a)
Stay at rest
b)
Increase Velocity
c)
Decrease Mass
12.
How does Newton’s third law explain how a rocket takes off?
a)
The rocket’s acceleration is positive, while the gasses acceleration is negative but the direction is the same. 
b)
The rocket is at rest until ignition.
c)
The hot gasses move in one direction, while the rocket moves in the opposite direction but with equal force.
13.

A rocket pushes burning gases DOWN which causes the rocket to launch UP. Which law is this?

a)

Law 1

b)

Law 2

c)

Law 3

14.

A sports car speeds up much faster than a dump truck when a traffic light turns from red to green. Which law is this?

a)

Law 1

b)

Law 2

c)

Law 3

15.

When a mule stops suddenly, the packages on its back continue to move forward onto the ground. Which law is this?

a)

Law 1

b)

Law 2

c)

Law 3

16.

What is the formula for the 2nd law of motion?

a)

a=lw

b)

F=m/a

c)

F=ma

17.

Force is related to mass and acceleration. Which law is this?

a)

Law 1

b)

Law 2

c)

Law 3

18.

It is much more difficult to move a dresser full of clothes than an empty dresser.

a)

Law 1

b)

Law 2

c)

Law 3

19.

A book sitting on the table does not move.

a)

Law 1

b)

Law 2

c)

Law 3

20.

A skateboarder pushes the ground BACKWARDS which causes the board to move FORWARD.

a)

Law 1

b)

Law 2

c)

Law 3

21.

A change in and object's position

a)

mechanical energy

b)

potential energy

c)

motion

d)

force

22.

Can cause an object at rest to move

a)

gravity

b)

friction

23.

Can cause an object in motion to stop

a)

gravity

b)

friction

24.

If you have an object with a great mass....

a)

It will take a large force to move it

b)

It will not take much force to move it.

25.

Which object most likely had a greater force applied>

a)

an object with a great acceleration

b)

an object with a small acceleration

26.
Change in position over time.
a)
Location
b)
Velocity
c)
Motion
d)
Movement
27.
Distance over time.
a)
Travel
b)
Motion
c)
Velocity
d)
Speed
28.
Speed plus direction.
a)
Velocity
b)
Motion
c)
Position
d)
Acceleration
29.
When an object speeds up, slows down, stops, or starts is called?
a)
speed
b)
direction
c)
acceleration
d)
time
30.
What are the two things that must be measured in order to find an objects velocity?
a)
speed and direction
b)
acceleration and speed
c)
direction and time
d)
distance and rate
31.
Which of the following is an example of velocity?
a)
running 20 mph
b)
running 20 miles
c)
running 20 mph quickly
d)
running 20 mph south
32.

the speed of an object in a particular direction

a)

direction

b)

motion

c)

speed

d)

velocity

33.

What two things do you need to know to calculate speed?

a)

direction and distance

b)

time and direction

c)

time and distance

d)

distance and position

34.

A correct measure of velocity would be

a)

300 m/hr

b)

7,800 m/sec

c)

40 kn/hr north

35.
A school bus drives 35 mph down the street and slows as it approaches the stop sign.  This is an example of..

a)
acceleration
b)
speed
c)
velocity
d)
force
36.
Describe the motion of the car.
a)
The car has acceleration because it is at rest 
b)
The car does not have acceleration because it is at rest 
c)
The car has velocity because it is at rest 
d)
The car has acceleration because it is at rest 
37.

______ is the ability to cause change or do work. It is all around us

a)

force

b)

speed

c)

friction

d)

energy

38.
Cars, bicycles, and people are all objects that can be in motion. What is true about motion? 
a)
an object in motion is accelerating 
b)
motion is the change in position of an object. 
c)
an object in motion has no speed but it does have velocity
d)
gravity and friction are responsible for all motion 
39.
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
40.

Which of the following has the MOST momentum?

a)

rolling ping-pong ball

b)

rolling bowling ball

c)

rolling soccer ball

d)

rolling basketball

41.

Which formula is used to calculate

momentum?

a)

Momentum = Mass x Speed

b)

Momentum = Weight x Speed

c)

Momentum = Volume x Velocity

d)

Momentum = Mass x Velocity

42.

A doorknob is an example of a _______.

a)

wheel and axle

b)

inclined plane

c)

pulley

d)

wedge

43.
Which type simple machine would the base of a light bulb be?
a)
screw
b)
wedge
c)
wheel and axle
d)
pulley
44.

An example of a lever is a ________.

a)

doorstop

b)

drill

c)

staircase

d)

hammer

45.

The fixed point around which a lever rotates is know as the

a)

wheel.

b)

fulcrum.

c)

input force.

d)

output force.

46.

A simple machine that splits an object apart is a _______.

a)

inclined plane

b)

fulcrum

c)

wedge

d)

lever

47.

A ramp is an example of a(n) _______.

a)

inclined plane

b)

fulcrum

c)

force

d)

lever

48.

A doorknob is a simple machine made up of 2 circular objects of different sizes. When turning a doorknob, what type of simple machine is being used?

a)

inclined plane

b)

wheel and axle

c)

wedge

d)

pulley

49.

Which of the following is NOT an example of the simple machine know as a screw?

a)

the lid of a jar

b)

a bolt

c)

a drill bit

d)

a crowbar

50.
Which type of lever is this?
a)
First Class Lever
b)
Second Class Lever
c)
Third Class Lever
d)
Coach  Class Lever
51.
A see saw is an example of a:
a)
1st class lever
b)
2nd class lever
c)
3rd class lever
52.
A wheelbarrow is an example of a:
a)
1st class lever
b)
2nd class lever
c)
3rd class lever
53.

What class lever is a fishing rod?

a)

1st

b)

2nd

c)

3rd

54.

What kind of lever is this?

a)

First Class Lever

b)

Second Class Lever

c)

Third Class Lever

55.

What class lever does this picture show?

a)

1st

b)

2nd

c)

3rd

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