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UNIT 5 A+

Total questions: 53

Worksheet time: 48mins

Name
Class
Date
1.

What two things determine the gravity of an object?

a)

mass & weight

b)

mass & distance

c)

density & mass

d)

volume & distance

2.

When will the forces of gravity between two objects be the GREATEST?

a)

when the masses of both objects are small and the objects are far apart

b)

when the masses of both objects are large and the objects are close together

c)

when the masses of both objects are small and the objects are close together

d)

when the masses of both objects are large and the objects are far apart

3.

When will the gravity between two objects be the LEAST?

a)

when the masses of both objects is small and the objects are close together

b)

when the masses of both objects is small and the objects are far apart

c)

when the masses of both objects is large and the objects are close together

d)

when the masses of both objects is large and the objects are far apart

4.
The law of universal gravitation is credited to whom? 
a)
Einstein 
b)
Galileo
c)
Darwin
d)
Newton 
5.
Look at the picture.  Is the force of gravity on the boy a push or a pull? 
a)
Pull
b)
Push
6.
As mass increases, what happens to gravitational force?
a)
increases
b)
decreases
c)
stays the same
d)
i don't know
7.
Which model has greater gravitational attraction (if any)
a)
Model A
b)
Model B
c)
Both Model A and Model B (same gravity)
8.
Which system has the greater gravitational attraction between the two objects (if any)?
a)
System A
b)
System B
c)
Same gravitational attraction fro System A and System B
9.

More mass equals:

a)

less gravity

b)

less distance

c)

more gravity

d)

more distance

10.

Less mass equals:

a)

less gravity

b)

less distance

c)

more gravity

d)

more distance

11.
Is the force of gravity acting on the bag of potatoes a contact or non-contact force?
a)
contact force
b)
non-contact force
12.
Where would you have more mass, on Earth or on the Moon?
a)
Earth
b)
Moon
c)

It is the same, mass doesn´t change

d)

In both planets.

13.

What is net force on an object sitting still?

a)

0 N

b)

20 N

c)

There are no forces applied to an object sitting still

d)

Cannot be calculated

14.

Select ALL rules of magnetic attraction

a)

opposite poles attract

b)

like poles repel

c)

opposite poles repel

d)

like poles attract

15.

These forces are...

a)

Balanced

b)

Unbalanced

16.

The illustration shows the forces in Newtons (N) acting on three different blocks. Which boxes will move under these conditions?

a)

Blocks 1 and 2

b)

Blocks 2 and 3

c)

Blocks 1 and 3

d)

Blocks 1,2, and 3

17.

The illustration shows the forces in Newtons (N) acting on each group. Which direction will the groups move under these conditions?

a)

To the right 2N

b)

To the left 2N

c)

To the right 22N

d)

To the left 10N

18.

What conclusion can be made about the forces acting on the teeter totter?

a)

Balanced

b)

Equal 400 N

c)

Will shift to the left

d)

Will shift to the right

19.

What is the sum of all forces acting on an object

a)

net force

b)

motion

c)

Newton's 3rd Law

d)

newton's

20.

Which of the following graphs shows how the mass of an object affects the amount of force needed to move it?

a)

b)

c)

d)

21.

a)

21

b)

20.1

c)

20.5

d)

201

22.
The picture of the position vs. time graph shows an object that is...
a)
accelerating/speeding up
b)
moving at a constant speed 
c)
not moving 
d)
accelerating/slowing down. 
23.
Which graph represents zero acceleration (constant velocity)?
a)
A
b)
B
c)
C
d)
D
24.
Which graph represents the greatest acceleration?
a)
A
b)
B
c)
C
d)
D
25.
Which section of the graph shows acceleration?
a)
AB
b)
BC
c)
EF
d)
FG
26.
What happened during C to D point?
a)
not moving
b)
increasing speed at a constant rate
c)
moving at a constant speed
d)
moving at 0 m/s2 acceleration
27.

A car turns right without slowing down. Is this an example of acceleration?

a)

No, acceleration is the increase or decrease in speed.

b)

Yes, because the car changed directions.

c)

Yes, because the car increased it's speed.

d)

No, because the car did not change directions.

28.
Acceleration only takes place when things speed up. 
a)
True
b)
False
29.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
d)
less friction doesn't affect speed
30.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
31.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity 
32.
Which of the following is an example of friction that is helpful?
a)
Brakes used on a bike
b)
Tires from a car on the road
c)
Tread on the bottom of your shoes
d)
All are examples that are helpful
33.
What type of friction is not moving?
a)
static
b)
sliding
c)
fluid
d)
rolling
34.
Which of the following is an example of friction that is harmful?
a)
Pencil marking on paper
b)
Engine parts wearing out
c)
sand placed on ice in the winter
d)
Using an eraser to erase marks
35.
 What is the unit called that measures force?
a)
weight
b)
meter
c)
Newton
d)
kilogram
36.

What is Newton's 1st law?

a)

Law of Force and Acceleration

b)

Law of Inertia

c)

Law of Action-Reaction

d)

Law of motion

37.

Newtons 3rd Law of Motion states:

a)

An object at rest will remain at rest unless acted upon by an outside force.

b)

For every action, there is an equal and opposite reaction

c)

The greater the mass of an object, the more force it will take to accelerate the object

38.

The formula for Force is:

a)

Force= Magnet x Acceleration

b)

Force= Mass x Acceleration

c)

Force= Mass x Arsenic

d)

Funny= Monkey x Arrive

39.

Which is an example of Newton's 2nd law?

a)

A ball bouncing

b)

A fan spinning

c)

Pushing a 10 pound box

d)

Sneezing

40.

A push or pull on an object is called...

a)

Acceleration

b)

Mass

c)

Inertia

d)

Force

41.
An object's motion won't change unless acted on by a _________
a)
spell
b)
force
c)
motion
d)
command
42.
_______ force is needed to move objects of larger mass.
a)
Less
b)
Equal
c)
More
d)
Light
43.
A still object __________ have forces acting upon it.
a)
does
b)
can't
c)
doesn't
d)
will sometimes
44.
Objects in motion tend to stay in motion, while objects at rest, tend to _____________.
a)
stay at rest
b)
roll
c)
start moving
d)
bounce
45.
______________ forces do not affect the movement of an object.
a)
Strong
b)
Weak
c)
Light
d)
Balanced
46.
This force is caused by air and slows things down.
a)
Friction
b)
Air Resistance
c)
Gravity
d)
Pulling
47.

In a speed vs. time graph, what is line segment DE?

a)

Steady Acceleration

b)

Steady Speed

c)

Steady Deceleration

48.

Ina Distance Vs. Time graph, What is happening at letter B?

a)

Change in direction; Constant increase in speed

b)

constant speed back in the direction of origin

c)

Object is stopped

d)

Constant increase in speed

49.

Ina Distance Vs. Time graph, What is happening at letter A?

a)

Change in direction; Constant increase in speed

b)

constant speed back in the direction of origin

c)

Object is stopped

d)

Constant increase in speed

50.

Ina Distance Vs. Time graph, What is happening at letter D?

a)

Change in direction; Constant increase in speed

b)

constant speed back in the direction of origin

c)

Object is stopped

d)

Constant increase in speed

51.

Ina Distance Vs. Time graph, What is happening at letter C?

a)

Change in direction; Constant increase in speed

b)

constant speed back in the direction of origin

c)

Object is stopped

d)

Constant increase in speed

52.

In a speed vs. time graph, what is line segment AB?

a)

Steady Acceleration

b)

Steady Speed

c)

Steady Deceleration

53.

In a speed vs. time graph, what is line segment BC?

a)

steady acceleration

b)

steady speed

c)

steady deceleration

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