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Concept 3 - Forces & Momentum Review

Total questions: 112

Worksheet time: 2hrs 50mins

Name
Class
Date
1.
What is a force?
a)
the PUSH or PULL on an object 
b)
The MOTION an object creates
c)
The objects HITTING one another
d)
Going REALLY FAST
2.

What is the net force being applied to the couch?

a)

5N RIght

b)

5 N Up

c)

45 N Right

d)

25 N Right

3.
What is the FORCE? 
a)
5 N
b)
10 N
c)
400 N
d)
0 N
4.
What is the unit for FORCE? 
a)
N (Newtons)
b)
lbs (pounds)
c)
g (grams)
d)
m/s (meters per second)
5.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
6.
What is the net force?
a)
5 N
b)
45 N to the left
c)
5 N to the right
d)
45 N to the right
7.
Which direction will the object move?
a)
Up
b)
Down
c)
Right
d)
Left
8.
Calculate the net force shown in the  diagram?
a)
41 N
b)
25 N
c)
16 N
d)
9 N
9.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
10.

What would be the force and direction of the motion ?

a)

50 Newtons to the left

b)

950 Newtons to the right

c)
no movement
d)

50 Newtons to the right

11.

What is the net force in this example?

a)

200 N

Left

b)

125 N

Left

c)

50 N

Left

d)

75 N

Left

12.

A ____________ is a push or a pull on an object.

a)

friction

b)

force

c)

magnet

d)

gravity

13.

Which direction will the net force be?

a)

Right

b)

Left

c)

Up

d)

Down

14.

If both people are exerting a force of 20 N, what is the net force?

a)

20 N

b)

40 N

c)

400 N

d)

0 N

15.

If both people are exerting a force of 30 N, what is the net force?

a)

30 N

b)

60 N

c)

300 N

d)

0 N

16.

If the boy is pulling with a force of 10 N and the girl is pushing with a force 20 N, what is the net force on the box?

a)

10 N

Right

b)

20 N

RIght

c)

30 N

Right

d)

0 N

17.

How do you find the net force of this image.

a)

Add up all the arrows

b)

Add a green arrow and the orange arrow.

c)

Subtract all the arrows.

d)

Add the green arrows and subtract the orange arrow.

18.

What is the overall Net Force and which side has a greater Net Force?

a)

641, Left

b)

571, Left

c)

601, Right

d)

480, Right

19.
Calculate the net force of the object in the image shown.
a)

20N

Left

b)

35N

RIght

c)

5N

Left

d)

25N

Right

20.
If an object is not moving the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)

broken

21.
What is a force?
a)
the PUSH or PULL on an object 
b)
The MOTION an object creates
c)
The objects HITTING one another
d)
Going REALLY FAST
22.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
23.
If there are two forces going in the SAME direction, you would ...?
a)
(-) Subtract the forces
b)
(+) Add the forces
c)
Neither
d)
(x) Multiply
24.

If there are two forces going in opposite directions how would you find the net force?

a)

Subtract

b)

Add

c)

Neither

d)

Multiply

25.
What is the net force?
a)
5.5 N left
b)
5.5 N right
c)
2.5 N left
d)
2.5 N right
26.
What is the net force?
a)
65 N left
b)
65 N right
c)
35 N left
d)
35 N right
27.
If these boys are pulling with the same amount of force.  What will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
28.
What is the net force?
a)
11 N left
b)
11 N right
c)
3 N left
d)
3 N right
29.

If the boy is pulling with a force of 10 N and the girl is pushing with a force 20 N, what is the net force on the box?

a)

10 N

b)

20 N

c)

30 N

d)

0 N

30.

The weight of an object varies with the:

a)

pull of gravity

b)

dimensions of the object

c)

volume of the object

31.

What is static friction?

a)

the friction between two objects that are not moving

b)

friction between a rolling object and the surface that it is rolling on

c)

friction is friction where an object rubs against another surface

d)

friction of something going through any type of liquid or air

32.

What is rolling friction?

a)

friction between two surfaces that aren't moving relatively to each other

b)

friction between a rolling object and the surface that it is rolling on

c)

friction where an object rubs against another surface

d)

friction of something going through any type of liquid or air

33.

What is sliding friction?

a)

friction between two surfaces that aren't moving relatively to each other

b)

friction between a rolling object and the surface that it is rolling on

c)

friction where an object rubs against another surface

d)

friction of something going through any type of liquid or air

34.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
35.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
36.
The scientific unit of weight is
a)
Kg
b)
N
c)
pounds
d)
Kgm/s
37.
The scientific unit for mass is
a)
Kg
b)
N
c)
pounds
d)
ounces
38.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
39.
You get in your spaceship and head on a trip to Pluto.  As you leave Earth, your weight ______________.
a)
increases
b)
decreases
c)
remains the same
40.
45 kg
a)
mass
b)
weight
41.
850 N
a)
mass
b)
weight
42.
112 N
a)
mass
b)
weight
43.
0.043 kg
a)
mass
b)
weight
44.
Fg
a)
symbol for mass
b)
symbol for weight
45.

If mass = 78.9 kg, weight on Earth =

a)

774 N

b)

77.4 N

c)

8 N

d)

774 kg

46.
If mass = 60 kg, weight on Earth = 
a)
6.1 N
b)
60 N
c)
589 N
d)
598 N
47.
If weight on Earth = 20.0 N, mass =
a)
2.04 kg
b)
196 kg
c)
10 kg
d)
2.20 kg
48.
If weight on Earth = 54 N, mass =
a)
530 kg
b)
5.50 kg
c)
54 kg
d)
5.05 kg
49.

A truck travels down a 30-kilometer stretch of highway in one hour

a)

Speed

b)

Velocity

c)

Acceleration

d)

Force

50.

An airplane flies north from Dallas to Chicago at 400 kilometers per hour

a)

Speed

b)

Velocity

c)

Acceleration

d)

Force

51.

A garden snail can move 0.013 meters in one second

a)

Speed

b)

Velocity

c)

Acceleration

d)

Force

52.

A line of thunderstorms moves east towards Houston at 30 kilometers per hour

a)

Speed

b)

Velocity

c)

Acceleration

d)

Force

53.

A hybrid car has excellent gas mileage and can cover 88 kilometers in one hour

a)

Speed

b)

Velocity

c)

Acceleration

d)

Force

54.

Geese fly about 64 kilometers per hour when they migrate south for the winter

a)

Speed

b)

Velocity

c)

Acceleration

d)

Force

55.

A healthy exercise is walking 2.5 kilometers in half an hour

a)

Speed

b)

Velocity

c)

Acceleration

d)

Force

56.

A cold front is approaching Texas from the west at 25 kilometers per hour

a)

Speed

b)

Velocity

c)

Acceleration

d)

Force

57.
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
58.
What does this graph represent?
a)
Constant Speed
b)
Acceleration
c)
Not moving
59.
Which runner won the race?
a)
A
b)
B
c)
C
d)
It was a tie
60.
According to the graph how far does the person travel in the first 5 seconds?
a)
2 m
b)
10 m
c)
0 m
d)
5 m
61.
What is the person doing from 5 seconds to 10 seconds?
a)
Walking 
b)
Running
c)
Standing Still 
d)
Walking Fast
62.
Velocity is both ____ and _____. 
a)
speed , direction 
b)
direction, mass
c)
volume, density 
d)
direction, magnitude 
63.
Which of the following represents a velocity?
a)
40 m
b)
40 m north
c)
40 m/s
d)
40 m/s north
64.
When you look at the speedometer of your car, it tells you your....
a)
Average speed
b)
Instantaneous speed
65.

What is the speed of a cheetah that travels 112.0 m in 4.0 s?

a)

0.0357 m/s

b)

30 m/s

c)

0.036 m/s

d)

28.0 m/s

66.
Two horses are running in a field.  The gray horse runs 12 m/s north.  The black horse runs 12 m/s east.  
Which is true about their motions?
a)
Equal speeds.
b)
Equal velocities.
c)
Equal distances.
d)
Equal displacements.
67.

Which statement is true about velocity?

a)

Must have measurement of speed.

b)

Must have a measurement of speed and direction.

c)

Must have only direction.

d)

Has neither a measurement of speed or direction.

68.
How do you calculate velocity?
a)
Distance divided by time.
b)
Displacement divided by time.
c)
Speed multiplied by time.
d)
Displacement divided by velocity.
69.
A car moves a distance of 1000 m with an average speed of 28 m/s.   Calculate the time.
a)
36 seconds
b)
28,000 seconds
c)
28 seconds
d)
972 seconds
70.
A cheetah runs with an average speed of 32 m/s for 30 seconds.  How far did the cheetah run?
a)
960 m
b)
1.07 m
c)
0.94 m
d)
62 m
71.
A car driving at 50 miles per hour drives for 2 hours. What distance did it cover?
a)
50 miles
b)
25 miles
c)
100 miles
d)
75 miles
72.
A car travels 300 km in 6 hours. What is the average speed of the car (in km/hr)?
a)
0.02 km/hr
b)
1,800 km/hr
c)
50 km/hr
d)
50 km
73.
A rocket is launched from the launch pad at a speed of 700 km/hr.  How far will the rocket have traveled after 1.0 hour?
a)
699 km
b)
700 km
c)
350 km
d)
700 hours
74.
A storm is moving toward your house at a speed of 20 km/hr.  It is now 60 km away from your house.  In what time will the storm reach your house?
a)
0.3 hours
b)
1200 hours
c)
3 km
d)
3 hours
75.
A truck travels down the highway at a speed of 110 km/hr.  How long does the trip last if the truck covered 2200 km?
a)
0.05 hours
b)
20 hours
c)
2,090 hours
d)
242,000 hours
76.
You are traveling at 100 km/hr to make it to work on time.  You have to be to work in .25 hours or you will be late.  You have 16 km to travel.  Will you make it to work on time?
a)
Yes
b)
No
77.

What is the symbol used for momentum?

a)

m

b)

t

c)

p

d)

v

78.
Scott travels north 5 miles and then goes west 3 miles before coming straight back south 2 miles. What is his distance?
a)
10
b)
7
c)
8
d)
6
79.
Distance and direction of an object's change in position from a starting point
a)
displacement
b)
distance
c)
motion
d)
reference point
80.
 Jermaine runs exactly 2 laps around a 400 meter track. What is the displacement?
a)
800
b)
400
c)
0
d)
200
81.
Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's displacement?
a)
0 meters
b)
400 meters
c)
800 meters
d)
1600 meters
82.

A bus travels 20 km in 30 minutes. What is the average speed of the bus?

a)

20 km/min

b)

30 km/min

c)

40 km/min

d)

50 km/min

83.

It takes a freight train 2.3 seconds to move 26 meters. Calculate its average speed.

a)

11.3 m/s

b)

1.13 m/s

c)

22 m/s

84.
What is the formula to calculate speed?
a)
S = t/d
b)
S = d/t
c)
S = d x t
d)
S = t x d
85.
Velocity is both ____ and _____. 
a)
speed , direction 
b)
direction, mass
c)
volume, density 
d)
direction, magnitude 
86.
Shona cycles at an average speed of 8miles per hour. How far has she travelled if she cycles for 4 hours?
a)
55km
b)
32km
c)
43km
d)
32miles
87.

An old lady rolls down a hill at 3 meters/second. The hill is 36 meters long. How many seconds does it take the old lady to reach the bottom of the hill?

a)

39 seconds

b)

12 seconds

c)

15 seconds

d)

33 seconds

88.

The equation for momentum is?

a)

momentum = force - mass

b)

momentum = acceleration / mass

c)

momentum = mass x acceleration

d)

momentum = mass x velocity

89.

If both dogs have the same velocity, which one has the greater momentum?

a)

The brown dog

b)

The white dog

90.

Which has more momentum: a 3.0 kg sledgehammer swung at 1.5m/s, or a 4.0 kg sledgehammer swung at 0.9 m/s?

a)

the 3.0 kg sledgehammer

b)

the 4.0 kg sledgehammer

91.

What is the momentum of a bird with a mass of 0.018 kg flying at 15 m/s?


(a)   kgm/s

92.

Which of the following is the unit for momentum?

a)

kg·m/s

b)

kg·m

c)

kg·m/s2

d)

Momentum has no unit.

93.

Which of the following objects has the greatest momentum?

a)

a 7.6-kg ball moving at 6.3 m/s westward.

b)

a 10.8-kg ball moving at 3.8 m/s eastward.

c)

a 3.2-kg ball moving at 13.3 m/s northward.

d)

a 5.2-kg ball moving at 8.8 m/s southward.

94.
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
95.

The formula ? = mass x acceleration or ? = m x a is used to find

a)

Force

b)

Velocity

c)

Momentum

d)

Gravity

96.
For every action, there is an equal and opposite reaction.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
97.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
98.
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 
99.

Newton's third law states that any action will have an _______ and ______ reaction

a)

Equal and similar

b)

Equal and opposite

c)

Equal and different

d)

Greater and opposite

100.

This equation goes with which law?

a)

Newton's first law of motion

b)

Newton's second law of motion

c)

Newton's third law of motion

101.

You push against a wall and the wall is pushing back on you.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

102.

You are carrying a lunch tray when you bump into the edge of a table. Although the tray did not tip, your milk falls off the front of the tray.

a)

Newton's 1st Law of Motion

b)

Newton's 2nd Law of Motion

c)

Newton's 3rd Law of Motion

103.
Why is it harder to push a van filled with bowling balls than it is to push a van with basketballs?
a)
The mass of the car is greater than the mass of the basketballs
b)
The mass of the bowling balls is greater than the mass of the basketballs
c)
The van with the basketballs is bigger than the van with the bowling balls
d)
It should be equally as hard to push the two vans
104.

Match the correct example with the law it matches with

a)

When an object is at rest it will stay at rest until a force acts upon it.

1.

Newton's 1st law

b)

A crate getting pushed.

2.

Newton's 2nd law

c)

Every action has an equal and opposite reaction.

3.

Newton's 3rd law

105.
A student leaves a pencil on a desk and the pencil stays in the same spot until another student picks it up.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
None of them
106.
What Unit do we Measure Force in? 
a)
Newtons
b)
Joules
c)
Force
d)
Kilograms
107.
A 20 kg bike accelerates at 10 m/s2.  What was the force?
a)
25 Newtons
b)
20 Newtons
c)
200 Newtons
d)
10 Newtons
108.

A toy car with a mass of 1 kg is pushed by a child with a force of 10N.

What is the acceleration of the car as a result of this push?

a)

10 m/s2

b)

1 m/s2

c)

10 m/s

109.

An F-16 fighter jet with a mass of 4000 Kg accelerates at 75 m/s2

What force is required from the jet’s engines to achieve this acceleration?

a)

30,000 N

b)

30 N

c)

300,000 N

110.

A 50 kg boy on a skateboard experiences a 75 N force as shown.

What is the acceleration of this boy?

a)

1.50 m/s2

b)

0.67 m/s2

c)

25.00 m/s2

111.

When mass is 10 kg, acceleration is 2 m/s2 what is force?
F = ma

a)
5 N
b)
20 N
c)
8 N
112.

A 50-kg crate is pushed with a horizontal acceleration of 20 m/s2. What net force is acting on the crate?

a)

2.5 N

b)

0.4 N

c)

1000 N

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