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Forces and Motion Review

Total questions: 50

Worksheet time: 2hrs 46mins

Name
Class
Date
1.
The term for when an object speeds up, slows down, or changes direction
a)
Speed
b)
Velocity
c)
Acceleration
d)
Newtons
2.
How much force is required to accelerate 10 kg at a rate of 100 m/s2?
a)
1,000kg
b)
10N
c)
10kg
d)
1,000N
3.
What is the acceleration of a 50 kg object pushed with a force of 2,500 newtons?
a)
75,000N
b)
50N
c)
2500N
d)
50m/s2
4.
18 km/s in a northerly direction is an example of
a)
velocity
b)
Speed
c)
acceleration
d)
momentum
5.
The net force of the following diagram is
a)
20 N
b)
Moving to the left
c)
Balanced forces
d)
160 N
6.
If forces acting on an object are balanced, then there _________ be a change in motion
a)
will
b)
will not
7.
The snail is traveling at 5 cm/hr. This is an example of
a)
speed
b)
forces
c)
acceleration
d)
velocity
8.
The runner's motion as they turned the curve to pass the baton is best described as
a)
speed
b)
force
c)
acceleration
d)
velocity
9.
The net force of the following diagram is
a)
620N→
b)
To the right→
c)
20N←
d)
balanced↔
10.
a change in position is defined as
a)
force
b)
motion
c)
speed
d)
acceleration
11.
How are speed and velocity different?
a)
Speed includes direction
b)
Speed indicates momentum
c)
Velocity includes Momentum
d)
Velocity includes direction
12.
When an object is acted on by unbalanced forces, the object will 
a)
continue in the same direction
b)
continue at the same speed
c)
accelerate in the direction of the unbalanced force
d)
will have no change in motion
13.
A satellite orbits the Earth at a constant speed. The forces that maintain the constant speed must be -
a)
BALANCED
b)
UNBALANCED
c)
CANCELLED
d)
DISPLACED
14.
What law is best described by inertia?
a)
1st
b)
2nd
c)
3rd
d)
law of conservation of mass
15.

What Law of Motion is represented by the picture?

a)

1st

b)

2nd

c)

3rd

d)

law of motion

16.
A person not paying attention while skateboarding hits a rock. The skateboard stops...they don't.
a)
The Law of Inertia (1st law)
b)
The Law of Acceleration (2nd law)
c)
The Law of Conservation of Momentum
d)
Action Reaction Law (3rd law)
17.
What Unit do we Measure Force in? 
a)
Newtons
b)
Joules
c)
Force
d)
Kilograms
18.
With unbalanced forces, the object will move in the direction that the _______ force is being applied.
a)
larger 
b)
smaller 
c)
equal 
d)
less
19.
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 
20.
Which type of force(s) will cause a change in an object's motion?
a)
gravity
b)
zero net force
c)
balanced forces
d)
unbalanced forces
21.
A person is pushed forward into their seatbelt when a car stops
a)
1st
b)
 2nd
c)
2 and 3
d)
3rd 
22.
Newton's third law states that any action will have a(n) _______ and ______ reaction
a)
Equal and similar
b)
Equal and opposite
c)
Equal and different
d)
Greater and opposite
23.
8 N to the left , and 4 N to the right. Find the net force. Is this balanced 
a)
12 N Right  No
b)
4 N Left  No
c)
12 N Right  Yes
d)
4 N Left  Yes
24.
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
25.
What are the appropriate units to describe acceleration?
a)
m/s
b)
m/s2
c)
cm
d)
there are no units associated with acceleration
26.

What law is best described

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

27.
Which one is balanced?
a)
top
b)
bottom
c)
both
d)
neither
28.
What is a PUSH or PULL of an object?
a)
Motion
b)
Force
c)
Friction
d)
Gravity
29.
Why is it harder for the boy in Image B to get down the hill?
a)
Motion
b)
Friction
c)
Work
d)
Displacement
30.
It takes more force to accelerate the iron man on the left than the iron man on the right because the iron man on the left has more mass. This best describes
a)
Newton's first law, the law of inertia
b)
Newton's second law, the law of acceleration
c)
Newton's third law, the law of action reaction 
d)
The law of universal gravitation
31.
What is the attractive force that exists between all objects that have mass?
a)
Weight
b)
Mass 
c)
Gravity
d)
Viscosity
32.

What force is acting on the cat at the end?

a)

Gravity

b)

Friction

c)

Momentum

33.

Is this Balanced or Unbalanced force.

a)

Unbalanced force

b)

Balanced force

34.
What is Newtons 2nd law of motion?
a)
Pancakes 
b)
Force= Mass multiplied by acceleration
c)
For every action there is a equal and opposite  re-action.
d)
Law of gravity 
35.
Mass is a measure of an object's inertia. Objects with greater mass have a greater inertia; objects with less mass have less inertia.
a)
true 
b)
false 
36.
__________ is the sum of all forces acting on an object. It is capable of accelerating a mass. 
a)
velocity
b)
gravity
c)
net force
d)
distance
37.
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
38.
Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?
a)
car
b)
bike
c)
they are equal
d)
cannot determine using the info provided
39.

Which object listed below has the greatest momentum?

a)

A 5 kg object rolling at 0.2 m/s.

b)

A15 kg object rolling at 2 m/s.

c)

A 15 kg object rolling at 1 m/s

d)

A 4 kg object rolling at 2 m/s.

40.
Which of the following has the least amount of momentum?
a)
An ant walking along the ground
b)
An ant at rest
c)
An elephant walking
d)
An elephant running
41.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
42.

True or False: objects that are smooth have LESS friction than objects that are rough

a)

TRUE

b)

FALSE

43.
Why does a car accelerate as it round a corner at a constant speed?
a)
Its direction changes
b)
It doesn't
c)
It slows down
d)
Its speeds up  
44.
A negative acceleration means that your object is _____. 
a)
not accelerating
b)
not moving
c)
speeding up 
d)
slowing down 
45.

Billy was driving his car and when he reached the tollbooth he slowed from 190m/s to 12m/s in 20 second. What was it's acceleration?

a)

-8.9m/s²

b)

8.9m/s²

c)

9.8m/s²

d)

-9.8m/s²

46.

The speed boats speed increased from 0m/s to 24m/s in a time span of 12 seconds. What is its acceleration?

a)

4 m/s²

b)

2 m/s²

c)

8 m/s²

d)

6 m/s²

47.

an object that appears to stay in place and that helps you detect motion in another object

a)

acceleration

b)

average speed

c)

motion

d)

reference point

48.

A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed? Use the equation s=d/t.

a)

10 m/s

b)

1000 m/s

c)

100 seconds

d)

10 seconds

49.

A boat travels at 22 km/hr for 10 hrs, what distance will it travel?

a)

220 miles

b)

2.2 km

c)

220 km

d)

22 km

50.

Friction is a force that opposes motion.

a)

True

b)

False

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