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ps 8 motion, forces, newtons laws

Total questions: 68

Worksheet time: 46mins

Name
Class
Date
1.
What has to happen when a force is exerted on an object for work to be done?
a)
the object moves
b)
the object stays still
c)
the object is heavy
d)
none of these
2.
In order for work to be done, what must be true?
a)
Force acts in the same direction as the distance traveled.
b)
Force and distance are in opposite directions.
c)
Force is greater than distance.
d)
Distance is greater than force.
3.
When you carry an object, is work done on it?
a)
Yes, force is applied in the same direction as the distance it travels.
b)
No, force is applied in a different direction than distance traveled.
4.
In which situation is NO work done?
a)
picking up a book bag
b)
dropping the bookbag
c)
carrying the bookbag
d)
none of these
5.
What is being transferred as you do work?
a)
Energy
b)
Heat
c)
Power
d)
Gravitational Potential Energy
6.
How do we calculate work?
a)
W = F * d
b)
w = f * D
c)
W = F * D
d)
w = f * d
7.
How do you calculate power?
a)
P = W/t
b)
P = E/t
c)
P = w * t
d)
P = bbq/chicken
8.
The SI unit of work is?
a)
Joules
b)
Watts
c)
Newtons
d)
meters
9.
A 5000N block is lifted 10 m. How much work was done?
a)
50000 J
b)
5000 J
c)
500 J
d)
50 J
10.
If 150 Joules of work is needed to move a box 10 meters, what force was used? 
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
11.
What is a PUSH or PULL of an object?
a)
Motion
b)
Force
c)
Friction
d)
Gravity
12.
Why is it harder for the boy in Image B to get down the hill?
a)
Motion
b)
Friction
c)
Work
d)
Displacement
13.
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.
14.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
15.
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
16.
The formula 
? = mass x acceleration
or 
? = m x a 
is used to find 
a)
Force
b)
Velocity
c)
Momentum
d)
Gravity
17.
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
18.
An automobile you are riding in suddenly stops, but you continue to go forward.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
19.
a)
1st
b)
2nd
c)
3rd
20.
a)
1st
b)
2nd
c)
3rd
21.
a)
1st
b)
2nd
c)
3rd
22.
One object has twice as much mass as another object. The first object also has also twice as much...
a)
velocity
b)
gravitational acceleration
c)
inertia
d)
all of these
23.
What is the attractive force that exists between all objects that have mass?
a)
Weight
b)
Mass 
c)
Gravity
d)
Viscosity
24.
If an object is stationary (not moving) the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
25.
When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?
a)
The cannon moving forward
b)
The cannonball moving forward
c)
The cannon moving backward
d)
The cannonball moving backward
26.
What Newtons law does this picture represent
a)
Newtons 2nd law 
b)
Law of gravity 
c)
Newtons 1st law
d)
Newtons 5th law
27.
When you push a boat off from the dock, you are demonstrating Newton's 3rd Law of Motion. It simply states that for every action there is an equal and opposite _______________?
a)
Motion
b)
Change
c)
Reaction
d)
Push
28.
What do each of the letters correctly represent?
a)
Funny, Monkeys, Arrive
b)
Force, Mass, Acceleration
c)
Free, Mass, Access
d)
Force, Magnesium, Arsenic
29.
Which is always a contact force?
a)
electric
b)
friction
c)
magnetic
d)
gravity
30.

Read the scenario below and choose the one answer that does not describe the following law:

Law of Inertia

a)

A billiard ball rolling on a table remains in motion until it hits another ball or the edge of the table.

b)

A person playing table tennis hits the ball and the ball hits the paddle back.

c)

A rollercoaster car at the top of a hill continues to move forward and down the track until it reaches the bottom.

31.

The picture shows a surfer standing on their surfboard riding a wave. Identify the correct action-reaction pair between the surfer and the surfboard. Choose two correct answers.

a)

Action - The force of the surfboard on the surfer.

b)

Action - The force of the water on the surfboard.

c)

Action - The force of the surfer on the surfboard.

d)

Reaction - The force of the water on the surfboard.

e)

Reaction - The force of the surfboard on the surfer.

32.

The two boxes below were pushed with the same amount of force. Which statements are supported by the diagram? Choose two correct answers.

a)

Box A will accelerate faster than box B.

b)

Box B has less inertia than box A.

c)

Box A has less inertia than box B.

d)

Box B will accelerate faster than box A.

33.

A bowler delivers a bowling ball towards the pins. The ball hits with 20 Newtons of force and knocks the pins down. Which of the following correctly describes the situation? Choose two correct answers.

a)

The action force is the pins hitting the bowling ball.

b)

The reaction force is the pins hitting the bowling ball.

c)

The action force is the bowling ball rolling on the lane.

d)

The action force is the bowling ball hitting the pins.

34.

Read the scenario below and choose the one answer that does not describe the following law:

Law of Acceleration (F=MA)

a)

A person carrying a heavy backpack will walk slower than person carrying a lighter backpack.

b)

A person trying to lift a heavy object will exert more force than trying to lift a lighter object.

c)

A boat drifting in a lake remains in motion unless acted upon by an outside force such as wind or currents.

35.

The four boxes below were moving at a constant speed down a ramp before they experience an unbalanced force of 5 N. Which of the following statements are true? Choose two correct answers.

a)

Box Z will accelerate faster than box W.

b)

Box Y and X will accelerate faster than box Z.

c)

Box Z will accelerate the slowest.

d)

Box Y will accelerate the slowest.

e)

Box X will accelerate faster than Box W.

36.

Read the scenario below and choose the one answer that does not describe the following law:

Law of Action Reaction

a)

A person jumping down on a trampoline causes the trampoline to push them upwards.

b)

A hammer strikes a nail, and the nail strikes back with equal force.

c)

A person trying to move a large couch will need to exert more force than when moving a small chair.

37.

The picture shows a golf club hitting a golf ball. Identify the correct action-reaction pair between the golf club hitting the golf ball. Choose two correct answers.

a)

Action - The force of the golf ball on the golf club.

b)

Action - The force of the golf club on the golf ball.

c)

Reaction - The force of the golf club on the golf ball.

d)

Reaction - The force of the golf ball on the golf club.

38.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
39.
Acceleration is defined as the CHANGE in 
a)
time it takes for one place to move to another place. 
b)
velocity of an object.
c)
distance divided by the time interval 
d)
velocity divided by the time interval 
40.
Acceleration only takes place when things speed up. 
a)
True
b)
False
41.
In each of the following cases, determine where the car has no acceleration ?
a)
A car shortly after a stoplight turns green.
b)
A car approaching a red light
c)
A car with the cruise control set at 80 km/h
d)
A car moving down a ramp
42.
You are walking and start to slow down. Do you have acceleration? 
a)
yes
b)
no 
43.
As you walk you make a right turn. Do you have acceleration? 
a)
yes 
b)
no
44.
A negative acceleration means that your object is _____. 
a)
Going to Wal-mart 
b)
running for president 
c)
speeding up 
d)
slowing down 
45.

The graph shows

a)

positive acceleration

b)

negative acceleration

c)

constant acceleration

d)

increasing acceleration

46.
The speed boats speed increased from 0m/s to 24m/s in a time span of 12 seconds.
a)
4 m/s²
b)
2 m/s²
c)
8 m/s²
d)
6 m/s²
47.
The Eagles are playing the Patriots in Super Bowl 52. The score is Eagles 31 Patriots 27 with two minutes left. Nick Foles throws a deep ball to Alshon Jeffery the velocity of the football increases from 10m/s to 40 m/s in over a 5 second period.
a)
6 m/s²
b)
10 m/s²
c)
8 m/s²
d)
30 m/s²
48.
John Cena’s speed increases from 15 m/s to 25 m/s as he runs downhill over a 5 second period.
a)
2 m/s²
b)
10 m/s²
c)
8 m/s²
d)
2 m/s
49.

If an object has a positive velocity and a positive acceleration it is...

a)

Speeding up

b)

Slowing down

c)

Changing direction

d)

Stopping

50.

If you increase your velocity from rest to +3 m/s and your friend increases his velocity from rest to +5 m/s, who has the biggest acceleration?

a)

You

b)

Your friend

c)

Both the same

51.

If someone runs a mile at 5 m/s the whole time, what is his acceleration?

a)

0 m/s2

b)

5 m/s2

c)

2.5 m/s2

d)

1 m/s2

52.
A dog runs with an initial speed of 7.5 m/s on a waxed floor.  It slides to a stop in 15 seconds.  What is the acceleration?
a)
-7.5 m/s
b)
-7.5 m/s2
c)
-0.5 m/s2
d)
7.5 mi//hr
53.
Which graph shows the object standing still?
a)
A
b)
B
c)
C
d)
D
54.
Acceleration describes how an object’s velocity is changing.  Which of the following scenarios provides the best example of an accelerating object?
a)
A car driving at a constant speed
b)
A book sitting on top of a high shelf
c)
A toy train traveling in a circle
d)
A toy boat floating in a bathtub
55.
When a car goes around a corner at 20 mph, why do we say it  accelerates?
a)
The car is accelerating because of the velocity is constant
b)
The car accelerates because it's going 20 mph
c)
Cars always accelerate when they are in motion
d)
The car is accelerating because it's changing direction
56.
Acceleration of an object happens when things ________
a)
slow down
b)
go faster
c)
change direction (turn)
d)
All of the above
57.
Simple machines make work easier by increasing what?
a)
The distance over which work is done 
b)
The force needed to do work 
c)
The time required to do work
d)
The acceleration of a massive object 
58.
Power is the RATE at which work is done. 
a)
True
b)
False
59.

What is needed to calculate work?

a)

force

b)

distance

c)

time

d)

mass

60.
If you lift a box from the floor to a height of 1m and then carry the for for 10m, you do work only when you CARRY the box.
a)
True
b)
False
61.
The more POWER you use to move an object, the more work you do. 
a)
True
b)
False
62.
The FARTHER you move an object, the more work you do.
a)
True
b)
False
63.
Work is done on an object when the object moves in the SAME direction in which the force is applied.
a)
True
b)
False
64.
You move a 12-newton box up a 6-meter ramp. In order to find out how much power you created, what would you need to know?
a)
The mass of the box
b)
The slope of the ramp 
c)
The direction the box moved
d)
How long the task took
65.
Which of these is a measure of force?
a)
100 newtons
b)
100 meters per second
c)
100 joules
d)
100 watts
66.

____ is being done when a force is exerted on a wagon while it is being pulled up a hill.

a)

Power

b)

Force

c)

Work

67.

Power is measured in which units?

a)

Newtons

b)

Joules

c)

Watts

d)

Joule/sec

68.

Work is measured in which units?

a)

Newtons

b)

Joules

c)

Watts

d)

Joule/sec

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