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Newton's laws , friction, work, and Power Quiz #1

Total questions: 75

Worksheet time: 56mins

Name
Class
Date
1.
Newton's Law of Inertia describes the motion of-
a)
Objects at rest only
b)
Objects in motion only
c)
Objects at rest and objects that are in motion
d)
Objects without a mass and resist being set into motion
2.
When the air is released from a balloon, the air moves in one direction, and the balloon moves in the opposite direction. Which law best explains the motion of the balloon?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Biology
3.
Which law best explains how objects accelerate when a force is applied?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Chemistry
4.
Which law best explains why the coin sitting on top of the ring falls directly into the jar below because it wants to remain at rest?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Science
5.
Which one of Newton’s Laws of Motion best explains why the dishes do not move when the table cloth is removed?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Biology
6.
Which law best explains why the boat moves in the opposite direction that Sally moves as she jumps to shore?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Chemistry
7.
Which law best explains why people remain in motion when a car crashes, if they are not wearing a seat belt?
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Biology
8.
Which law best explains why more force must be applied to the bowling ball to make it accelerate at the same rate as the tennis ball. 
a)
Newton's Law of Inertia
b)
Newton's Law of F=ma
c)
Newton's Law of Force Pairs
d)
Newton's Law of Biology
9.
Based on Newton's Law of Force Pairs, what would be the reaction force, if the action force is 60 N to the right?
a)
60 N to the right
b)
60 N to the left
c)
30 N to the left
d)
9.8 N to the right
10.
Calculate the acceleration of the tire in the diagram.
a)
5.3 m/s2
b)
0.2 m/s2
c)
12.0 m/s2
d)
9.8 m/s2
11.
A man hits a 0.2 kg golf ball causing it to accelerate at rate of 20 m/s2. Calculate the force used on the golf ball.
a)
4 N
b)
100 N
c)
0.01 N
d)
20.2 N
12.
A force of 560 N is needed to produce an acceleration of 20 m/s2. What is the mass of the accelerated body?
a)
28 kg
b)
11200 kg
c)
0.04 kg
d)
580 kg
13.

What force slows objects down and keeps them from moving?

a)

Acceleration

b)

Gravity

c)

Friction

d)

Net Force

14.

Which one of Newton's laws are displayed

a)

2nd law

b)

1st law

c)

3rd law

15.

An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an outside force. Which law does this describe

a)

2nd law

b)

1st law

c)

3rd law

16.

This is Newton's 3rd law

a)

True

b)

False

17.

When there is a change in motion?

a)

When forces are balanced

b)

When the forces are unbalanced

c)

Whe forces are equal

d)

Never

18.
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
19.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
20.
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
21.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
22.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
23.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
24.
What is the unit for mass?
a)
m/sec
b)
kg/sec
c)
kg
d)
kg m/sec
25.
What is the unit for velocity?
a)
m/sec
b)
kg/sec
c)
kg/m
d)
kg m/sec
26.
What is the unit for momentum?
a)
m/sec
b)
kg/sec
c)
kg/m
d)
kg m/sec
27.
A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 
a)
55 kg*m/s
b)
100 kg*m/s
c)
250 kg*m/s
d)
500 kg*m/s
28.
What happens to the speed of the wagon as the rain collects inside of it?
a)
it decreases
b)
it remains constant
c)
it increases
29.

Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...

a)

Skater 1 experiences a greater change in momentum

b)

Skater 2 experiences a greater change in momentum

c)

Skater 1 has a greater speed than Skater 2

d)

Skater 1 experiences a greater force

30.
Parkour Peter bends his knees upon landing in order to ____
a)
reduce his change in momentum
b)
increase his change in momentum
c)
increasing his landing time
d)
increasing his landing force
31.
Both students experience the same ____
a)
force of impact
b)
time of impact
c)
change in momentum
d)
all of the above
32.

The amount of friction depends on the weight of the objects

a)

True

b)

False

33.
Rougher surfaces have ...
a)
greater friction
b)
less friction
c)
the same level of friction
34.
How does friction affect speed?
a)
more friction decreases speed
b)
more friction increases speed
c)
less friction decreases speed
35.
When most objects with smooth surfaces rub, there is less friction.
a)
True
b)
False
36.
Friction is a force that acts in an ___________ direction of movement.
a)
similar
b)
opposite
c)
parallel
d)
west
37.
What does friction produce?
a)

color

b)
sound
c)
heat
38.
On which surface will a toy car travel the furthest?
a)
Carpet
b)
Polished Wood
c)
Ice
39.

Which of these statements is FALSE?

a)

Friction can slow things down

b)

Friction is never useful

c)

Friction can stop things from moving

40.
Movers slide a box down the ramp of a truck.
What helps slow the box as it slides to the bottom of the ramp?
a)
friction
b)
gravity
c)
inertia
d)
magnetism
41.

The motion of an object will change when an unbalanced force is applied to it

a)

true

b)

false

42.

The diagram represents a person using a spring scale to pull a wooden block up a ramp.The plastic straws were placed under the wooden block to

a)

decrease the mass of the block

b)

decrease the amount of friction

c)

increase the gravitational pull of the block

43.

Identify the force between the wheels of the cart and the ground surface that opposes forward motion of the cart

a)

Momentum

b)

Friction

c)

Magnetic

d)

Force

44.

Which force will decrease if the surface of the

ramp is made smoother?

a)

gravity

b)

magnetism

c)

friction

d)

electricity

45.

This type of force resist motion between two surfaces that are in contact with each other

a)

contact

b)

gravity

c)

friction

46.
What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
47.
Which of these could increase the friction between objects?
a)
Thick air molecules
b)
Water
c)
A rough surface
d)
A smooth surface
48.
Greater friction causes...
a)
An increase in speed
b)
A decrease in speed
c)
Both of these
d)
Neither increase or decrease
49.

The wheels and gears of a machine are greased

in order to decrease

a)

potential energy

b)

efficiency

c)

output

d)

friction

50.

Can Friction be an opposing force?

a)

Yes, it slows objects down until they stop

b)

No, it can't stop objects

c)

Sometimes if the object has no mass

51.

The diagram shows a stationary cart on a friction-less surface. Two unequal opposing forces are about to be applied. If the unequal opposing forces are applied to the cart at the same time, what will occur?

a)

The cart will move to the left.

b)

The cart will move to the right.

c)

The cart will alternate between moving left

and right.

d)

The cart will remain stationary.

52.

Which of these explains how friction affects the speed of a moving object?

a)

Friction pushes objects to higher speeds

b)

Friction only affects speed in outer space

c)

Friction can slow down objects until they stop

53.

In the formula, what does W represent?

a)

work

b)

force

c)

distance

d)

watt

54.

In the formula, what does F represent?

a)

work

b)

force

c)

distance

d)

watt

55.

In the formula, what does d represent?

a)

work

b)

force

c)

distance

d)

watt

56.

In the formula, what does P represent?

a)

power

b)

work

c)

time

d)

watt

57.

In the formula, what does W represent?

a)

work

b)

power

c)

time

d)

watt

58.

In the formula, what does t represent?

a)

time

b)

work

c)

power

d)

watt

59.
What is the SI unit for distance?
a)
meter
b)
kilometer
c)
newton
d)
centimeter
60.
What is the SI unit for time?
a)
second
b)
minute
c)
hour
d)
meter per second
61.
What is the SI unit for speed?
a)
meter per second
b)
meter per second squared
c)
meter
d)
second
62.
What is the SI unit for mass?
a)
kilogram
b)
gram
c)
pound
d)
newton
63.
What is the SI unit for acceleration?
a)
meter per second squared
b)
meter per second
c)
meter
d)
second
64.
What is the SI unit for force?
a)
newton
b)
pound
c)
kilogram
d)
meter
65.
What is the SI unit for energy?
a)
joule
b)
watt
c)
newton
d)
kilogram
66.
What is the SI unit for work?
a)
joule
b)
watt
c)
newton
d)
kilogram
67.
What is the SI unit for power?
a)
watt
b)
joule
c)
newton
d)
kilogram
68.
Energy is
a)
the ability to do work.
b)
the rate at which work is done.
c)
the force applied to an object for a distance.
d)
none of the above.
69.
Work is
a)
the ability to do work.
b)
the rate at which work is done.
c)
the force applied to an object for a distance.
d)
none of the above.
70.
Power is
a)
the ability to do work.
b)
the rate at which work is done.
c)
the force applied to an object for a distance.
d)
none of the above.
71.
It takes work to lift a rock. How much work does it take to lift a rock 3 times higher?
a)
three times as much
b)
two times as much
c)
four times as much
d)
ten times as much
72.
If a person does the same amount of work as someone else in half the time, which of the following is true?
a)
they did twice the work
b)
they did half the work
c)
they have twice the power
d)
they have half the amount of power
73.

Using the formula provided, calculate the work required to lift a rock 2 m with 10 N of force.

a)

20 J

b)

20 W

c)

10 J

d)

10 W

74.

Using the formula provided, calculate the power generated when a person performs 100 J of work for 10 seconds.

a)

10 W

b)

10 J

c)

1000 W

d)

1000 J

75.
What is science?
a)
The study of the natural world through observations and logical reasoning.
b)
The study of the universe through experiments and research.
c)
Fake News.
d)
The study of matter and its interactions.

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