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motion, friction, gravity

Total questions: 50

Worksheet time: 1hrs 13mins

Name
Class
Date
1.
 What is the unit that measures force?
a)
Weight
b)
Net force
c)
Newton
d)
Kilogram
2.
What type of friction acts on an object that is not yet moving?
a)
Static
b)
Dynamic
c)
kinetic
d)
Rolling
3.
Friction is a force that acts in a(n) ___________ direction relative to a moving object.
a)
similar
b)
opposite
c)
parallel
d)
perpendicular
4.
The wheels on a moving skateboard most likely experience ____________.
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
5.
Friction is a force that acts in a(n) ___________ direction relative to a moving object.
a)
similar
b)
opposite
c)
parallel
d)
perpendicular
6.
 What is the unit that measures force?
a)
Weight
b)
Net force
c)
Newton
d)
Kilogram
7.
These swimmers are most likely experiencing _________.
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
8.
As the child moves down the slide, they mostly experience the effect of ___________.
a)
Rolling Friction
b)
Sliding Friction
c)
Fluid Friction
d)
Static Friction
9.
How would the absence of friction affect a marble traveling on a long, straight path?
a)
The marble’s speed would decrease.
b)
The marble’s speed would increase.
c)
The marble would stop immediately. 
d)
The marble would remain at a constant speed.
10.
Which of the following is an example of rolling friction?
a)
pushing a box across the floor
b)
riding a bike down a hill
c)
a hockey player skidding to a stop
d)
a soccer player making a slide tackle 
11.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and volume
c)
distance and weight 
d)
weight and mass
12.
As mass increases, what happens to the gravitational force?
a)
It increases.
b)
It decreases.
c)
It stays the same.
d)
It acts as a 3rd degree derivative function.
13.
As the distance between 2 objects increases, what happens to gravitational force?
a)
It increases.
b)
It decreases.
c)
It stays the same.
d)
Only Mr. Silvio knows what will happen.
14.
Which of the following will not change in different gravitational fields?
a)
weight
b)
force
c)
mass
d)
pounds
15.
An object is falling but it is not accelerating. What do you know?
a)
Gravity is stronger than air resistance.
b)
Air resistance is stronger than gravity.
c)
Air resistance is equal to gravity.
d)
The forces of air resistance and gravity are unbalanced.
16.
When does a falling object experienced balanced forces?
a)
When it reaches terminal velocity
b)
During free fall
c)
When it first starts to fall
d)
When it bounces up after hitting the ground
17.

Gravity and magnetism are examples of contact forces.

a)

True

b)

False

18.

Weight is the measure of gravitational force on an object.

a)

True

b)

False

19.

Forces have strength and direction.

a)

True

b)

False

20.

Mass and weight are not related to each other.

a)

True

b)

False

21.

You can reduce friction by

a)

increasing the mass

b)

adding lubricant

c)

adding more surface area

22.

Which type of friction exists between a surface and moving air?

a)

fluid friction

b)

static friction

c)

sliding friction

d)

rolling friction

23.

Which factor is NOT involved in determining gravitational force?

a)

mass

b)

speed

c)

distance

24.

A _______ is not a force.

a)

fall

b)

pull

c)

push

25.

After the swing is released, what causes the swing to move toward you again?

a)

Magnetism

b)

Air

c)

Resistance

d)

Gravity

26.

The magnet will attract all of the following EXCEPT ―

a)

nail

b)

another magnet

c)

scissors

d)

a penny

27.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
28.
The rougher the surface, the faster an object will travel over the surface.
a)
True
b)
False
29.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
30.
What does friction produce?
a)
light
b)
sound
c)
heat
d)
gravity
31.

Which of the following answers is the most scientific answer for the question:


What is friction?

a)

The random force between two solids, liquids, or gases.

b)

The contact force between two solids, liquids, or gases that slide past one another.

c)

The thing that creates static electricity

d)

A force that is random

32.
Any object with mass has gravity.
a)
True
b)
Sometimes
c)
False
d)
Never
33.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
34.
Which model has greater gravitational attraction (if any)
a)
Model A
b)
Model B
c)
Both Model A and Model B (same gravity)
35.
What is a force?
a)
a push or pull
b)
speed or acceleration 
c)
potential or kinetic energy
d)
balanced or unbalanced force
36.
When objects remain in the same place, it is called...
a)
gravity
b)
friction
c)
balanced force
d)
unbalanced force
37.
What is the force that causes everything to be pulled down to the Earth?
a)
friction
b)
gravity
c)
balanced
d)
unbalanced
38.
Force is measured in....
a)
Galileos 
b)
Newtons
c)
Di Vincis
d)
Einsteins 
39.
An unbalanced force is when objects move in one direction because the force is greater from that direction.
a)
true
b)
false
40.
What is a force that works AGAINST MOTION?
a)
Force
b)
Motion
c)
Gravity
d)
Friction
41.

If you push a tennis ball, a bowling ball, and a basketball with the same amount of force, which one will go farthest?

a)

bowling ball

b)

tennis ball

c)

basketball

42.

An automobile you are riding in suddenly stops, why does your body continue to go forward?

a)

An object in motion stays in motion.

b)

Gravity pulls your body towards the earth.

c)

Friction makes your body slow down.

43.

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

a)

An object in motion stays in motion.

b)

It takes more force to move an object with more mass.

c)

It takes more friction to move the empty dresser.

44.
A force of 90N is applied to each cart below, which one will accelerate the fastest?
a)
Cart 1
b)
Cart 2
c)
Cart 3 
d)
Cart 4
45.

If there was no friction, objects in motion would stay in motion forever.

a)

true

b)

false

46.

Why is it harder to push a cart full of bricks than a cart full of feathers?

a)

The bricks have more friction than the feathers.

b)

The feathers have more friction than the bricks.

c)

The bricks have more weight/mass than the feathers.

d)

The feathers have more weight/mass than the bricks.

47.
A car is driven for 3 hours. What else do you need to know to describe this car’s speed?
a)
the road the car in driven on
b)
the time of day
c)
the distance the car is driven
d)
the number of passengers in the car
48.

What is the speed of a runner who runs 400 meters in 40 seconds?

a)

10 meters/second

b)

40 meters/second

c)

100 meters/second

d)

1,600 meters/second

49.
What pulls a ball back to earth?
a)
Gas
b)
Gravity
c)
Friction
d)
Molecules
50.

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

a)

An object in motion stays in motion.

b)

It takes more force to move an object with more mass.

c)

It takes more friction to move the empty dresser.

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