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Final review: newton/energy

Total questions: 51

Worksheet time: 1hrs 17mins

Name
Class
Date
1.
If the mass is 50kg and the accelerations is 123.7 m/s what would the force be?
a)
721
b)
5108
c)
6185
d)
2.474
2.
If you increase the mass the acceleration will....
a)
Increase
b)
decrease
3.
If you increase the force the acceleration will....
a)
Increase
b)
decrease
4.
If the net force on an object is zero, then the object has
a)
reaction forces
b)
action forces
c)
balanced forces
d)
unbalanced forces
5.
What is a PUSH or PULL of an object?
a)
Motion
b)
Force
c)
Friction
d)
Gravity
6.
Why is it harder for the boy in Image B to get down the hill?
a)
Motion
b)
Friction
c)
Work
d)
Displacement
7.
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.
8.
The formula 
? = mass x acceleration
or 
? = m x a 
is used to find 
a)
Force
b)
Velocity
c)
Momentum
d)
Gravity
9.
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
10.
a)
1st
b)
2nd
c)
3rd
11.
a)
1st
b)
2nd
c)
3rd
12.
What is the attractive force that exists between all objects that have mass?
a)
Weight
b)
Mass 
c)
Gravity
d)
Viscosity
13.
If an object is stationary (not moving) the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
14.
What is the net force
a)
10 N
b)
0 N
c)
25 N
d)
1 N
15.

A squirrel sits on the ground and eats a donut. We know the forces on him must be balanced because...

a)

Forces are always balanced

b)

the squirrel is not accelerating

c)

squirrels are projectiles

d)

he's eating a donut

16.
Are forces balanced or unbalanced when a marble speeds up rolling down a ramp?
a)
Balanced
b)
Unbalanced
17.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
18.
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
19.
Which one is balanced?
a)
top
b)
bottom
c)
both
d)
neither
20.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
21.
What is the magnitude (size) and direction of the net force?
a)
15 N to the left
b)
15 N to the right
c)
1 N to the left
d)
1 N to the right
22.
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
23.

Suppose that an astronaut throws a baseball in outer space at a location far from significant influences of gravity and air resistance. One would expect that the baseball would ____.

a)

eventually stop since all objects ultimately "lose their steam"

b)

eventually stop as its inertia slowly becomes used up

c)

continue in motion with the same speed and direction

d)

either a, b, or c -- depending on whether the astronaut continues to push it

24.

Inertia depends on ______

a)

Velocity

b)

Speed

c)

Distance

d)

Mass

25.

Rank these objects in order of their inertia, from greatest to least.

a)

ABCD

b)

DABC

c)

DCBA

d)

CBAD

26.

Michael Jordan guides a golf ball around the outside rim of the green at the Hole-In-One Putt-Putt Golf Course. When the ball leaves the rim, which path (A, B, or C) will the golf ball follow?

a)

A

b)

B

c)

C

27.
A girl on a motorbike passes by at a speed of 15 m/s. Her mass is 40 kg. What is her kinetic energy? 
a)
300 Joules
b)
600 Joules
c)
950 Joules
d)
4500 Joules
28.
Calculate the potential energy of a roller coaster at the top of a 72 m hill that has a mass of 112 kg.
a)

80640 J

b)

790,720 J

c)

8,640 J

d)

790,700 J

29.
At what position does the pendulum have the greatest gravitational potential energy?
a)
Position D
b)
Position C
c)
Position B
30.
Which character has the greatest gravitational potential energy?
a)
Character A
b)
Character B
c)
Character C
d)
Character D
31.
Which skier has the greatest kinetic energy?
a)
Skier A
b)
Skier B
c)
Skier C
d)
Skier D
32.
Calculate the kinetic energy of a 2 kg rock that rolls down the hill with a velocity of 8 m/s.
a)
64 Joules
b)
16 Joules
c)
128 Joules
d)
8 Joules
33.
Calculate the potential energy of a rock with a mass of 55 kg while sitting on a cliff that is 27 m high.
a)

14,850 Joules

b)

1,485 Joules

c)

2 Joules

d)

743 Joules

34.

Mass is measured in:

a)

J

b)

lbs

c)

kg

d)

N

35.

The following scenario relates to a rollercoaster:

When at the top of a hill, a cart has _________ energy, as it travels down the track, it has _______ energy.

a)

Kinetic, potential

b)

potential, generational

c)

potential, kinetic

d)

kinetic, exhilirating

36.
Which of the following energy transformations occur when a lamp that is plugged into a wall socket is functioning correctly?
a)
Chemical to light
b)
Electrical to chemical
c)
Electrical to light
d)
Chemical to electrical
37.
Which of the following devices transforms electrical energy into mechanical energy?
a)
An e-reader
b)
a fan
c)
a manual pencil sharpener
d)
ipod
38.
According to the Law of Conservation of Energy, energy cannot be _________ or ____________. 
a)
destroyed, destroyed
b)
created, saved
c)
created, destroyed
d)
lost, found
39.

What is the Total Energy at the top?

a)

15,000 J

b)

3,750 J

c)

7,500 J

d)

11,250 J

40.

What is the KE 1/2 of the way down?

a)

15,000 J

b)

3,750 J

c)

7,500 J

d)

11,250 J

41.

What is the GPE at the top?

a)

50 J

b)

25 J

c)

0 J

d)

100 J

42.

The SI Unit for Energy is

a)

Joule

b)

Potential

c)

Calorie

d)

Kilojoule

43.

A typical internal combustion engine only converts 20-40% of the potential energy stored in fuel to the mechanical movement of the car. Where does a majority of the energy go?

a)

Light Kinetic

b)

Heat Kinetic

c)

Elastic Potential

d)

Gravitational Potential

44.
Two balls in the diagram above have equal mass and are released from rest at the heights indicated. How does the gravitational energy of ball B compare to ball A before they are released?
a)
B has twice as much as A
b)
B has half as much as A
c)
B has 4 times as much as A
d)
They have the same amount
45.
What kind of energy is in a moving skateboard?
a)
Potential
b)
Kinetic
46.
A baby carriage that is carrying twins is sitting at the top of a knoll that is 21 m high. The carriage
with the babies are 48kg. What is the Potential Energy of the twins and the carriage?
a)

5,524 Joules

b)

45,125 Joules

c)

10,080 Joules

47.
What is the KE of a 1.00 kg hammer swinging at 20.0 m/s?
a)
200 Joules
b)
1500 Joules
c)
950 Joules
48.

According to Newton’s Second Law of motion, if you apply a greater force, then the acceleration will be:

a)

Greater/Faster

b)

Lesser/Slower

c)

Stay the Same

49.

An car is accelerating at 9 m/s/s and has a mass of 1200kg. What is the net force? (F = MA)

a)

133 N

b)

10,800 kg

c)

75 N

d)

10,800 N

50.
The tendency of an object to resist changes in its motion is...
a)
inertia
b)
force
c)
acceleration
d)
velocity
51.

Which Newton's Law says if object A exerts a force on object B, then object B exerts the same force on object A? (Also known as the action/reaction law)

a)

1st

b)

2nd

c)

3rd

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