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WorksheetsPhysics final
Total questions: 50
Worksheet time: 1hrs 16mins
Name
Class
Date
1.
The units for momentum are
a)
kg
b)
m/s
c)
kg-m/s
d)
kg/m/s
2.
A 2 kg object is dropped from a height of 12 m. What is the kinetic energy of the object as it strikes the ground?
a)
1.63 J
b)
2.44 J
c)
235 J
d)
576 J
3.
The law of conservation of momentum states that,
a)
p before is less than p after
b)
p before is the same as p after
c)
p before is more than p after
4.
A 0.250 kg cart moving at 0.400 m/s has how much momentum?
a)
0.1 kg-m/s
b)
1 kg-m/s
c)
10 kg-m/s
d)
100 kg-m/s
5.
In this type of collision, objects tend to "stick" together.
a)
elastic
b)
inelastic
c)
They "stick" together in both types of collisions
6.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
7.
An 1 kg object moving to the right at 2 m/s collides inelastically with a 1 kg object moving to the left at 2 m/s. The final velocity of both objects will be
a)
0 m/s
b)
1 m/s
c)
2 m/s
d)
4 m/s
8.
Mechanical Energy is another name for just Kinetic Energy
a)
True
b)
False
9.
Potential Energy is stored energy
a)
False
b)
True
10.
Kinetic Energy is energy of motion
a)
True
b)
False
11.
At which point is potential energy greatest
a)
W
b)
X
c)
Y
d)
Z
12.
When a pendulum swings, at which point is kinetic energy highest:
a)
1
b)
2
c)
3
d)
4
13.
When a pendulum swings, at which point is potential energy at its greatest
a)
1
b)
2
c)
3
d)
4
14.
What is the unit used to measure Power?
a)
Joule
b)
Watt
c)
Newton
d)
Pascal
15.
What is the unit used to measure work?
a)
Joule
b)
Watt
c)
Newton
d)
Pascal
16.
What are the types of potential energy?
a)
clastic potential energy
b)
chemical potential energy
c)
gravitational potential energy
d)
all of the above
17.
What is an example of kinetic energy?
a)
a soccer ball moving
b)
an apple tree
c)
a rock at the top of a hill
d)
a moving car
18.
The ability to do work is....
a)
work
b)
power
c)
acceleration
d)
energy
19.
Which has greater KE, a car traveling at 30 m/s or a second car that is 1/2 as massive, but traveling at 60 m/s?
a)
car 1
b)
car 2
c)
both have the same KE
20.
How much work would have to be done on a truck with a KE of 2 x 104 J to reduce its KE by half
a)
1 X 102 J
b)
4 X 104 J
c)
2 X 102 J
d)
1 X 104 J
21.
The acceleration of an object due to gravity on Earth is...
a)
8.9 m/s2
b)
9.8 m/s2
c)
It depends on the mass of an object
d)
Equal to its kinetic energy
22.
You serve a volleyball with a mass of 2 kg. The ball leaves your hand with a speed of 30 m/s. What is the KE of the ball?
a)
900 J
b)
1800 J
c)
60 J
d)
30 J
23.
There is a bell at the top of a tower that is 45 m high. The bell weighs 100 kg. What is the potential energy of the bell?
a)
980 J
b)
441 J
c)
4,500 J
d)
44,100 J
24.
A car is traveling with a velocity of 40 m/s and has a mass of 1120 kg. What is the KE of the car?
a)
22,400 J
b)
44,800 J
c)
896,000 J
d)
1,792,000 J
25.
An 2 kg apple is hanging in a tree, 10 ft off the ground. What is the gravitational potential energy of the apple?
a)
19.6 J
b)
20 J
c)
98 J
d)
196 J
26.
Which of the following has the GREATEST IMPACT on the kinetic energy of an object?
a)
Mass
b)
Velocity
c)
Height
d)
The acceleration due to gravity
27.
A skydiver jumps from a plane and is halfway through her descent. At this point in time she has...
a)
Kinetic Energy
b)
Gravitational Potential Energy
c)
Both Kinetic and Gravitational Potential Energy
d)
She has no energy
28.
Which of the following has the greatest amount of gravitational potential energy?
a)
A 20 kg projector suspended 10 m in the air
b)
A 100 kg wrecking ball suspended 10 m in the air
c)
A 5 kg basketball suspended 10 m in the air
d)
They all have the same GPE because they are all 10 m in the air
29.
Which of the following has the greatest amount of kinetic energy?
a)
A small baby running at 15 m/s
b)
A toddler running at 15 m/s
c)
Mrs. Rewerts running at 15 m/s
d)
Arnold Schwarzenegger running at 15 m/s screaming "Get to the choppa!"
30.
Which of the following affects the gravitational potential energy of an object?
a)
The mass of the object
b)
The height of the object
c)
The velocity of the object
d)
Both the mass and height of the object
31.
A man carries a 50-kg box up a 5.0-m long ramp using a force of 300 N. The box was raised a vertical distance of 2.5 m. The actual work done by the worker was —
a)
750 J
b)
1250 J
c)
1500 J
d)
5000 J
32.
What is the power rating of an engine capable of lifting a 800 N object 5 m vertically in 4 seconds?
a)
1000 J
b)
1000 W
c)
4000 J
d)
4000 W
33.
Find the magnitude of the force between two charges of 1.0 C each which are 1.0 meter apart?
a)
9E-9 N
b)
9E9 N
c)
1.1E10 N
d)
1.1E-10 N
34.
Calculate the force exerted between two charged objects separated by a distance of 0.6 m. One object has a charge of -5 C and the other has a charge of +2.0 C.
a)
-1.5E-11 N
b)
2.5E-11 N
c)
-2.5E11 N
d)
-7.5E-10 N
35.
If each of the charges doubles, what happens to the force?
a)
Quadruples
b)
Doubles
c)
Stays the same
d)
Reduced by half
36.
If the distance doubles, what happens to the force?
a)
Reduced by half
b)
Reduced by 1/4
c)
Stays the same
d)
Quadruples
37.
Electrostatic force F is directly proportional to:
a)
r^2 (distance squared)
b)
q1
c)
q2
d)
both q1 and q2
38.
What is a coulomb?
a)
A city in Ohio
b)
Unit for kinetic energy
c)
The standard unit of electrical charge ("C")
d)
Amount of protons in an element
39.
What is Voltage?
a)
The difference in charge between two points on an electrical circuit
b)
Amount of resistance in an object
c)
The speed of light
d)
A combination of random letters
40.
What is the correct equation for voltage?
a)
V=joules/coulombs
b)
V=MP
c)
V=force/work
d)
V=charge*strength
41.
10 joules
2 coulombs
Voltage=?
2 coulombs
Voltage=?
a)
20
b)
5
c)
12
d)
8
42.
360 joules
6 coulombs
Voltage= ?
6 coulombs
Voltage= ?
a)
356
b)
2160
c)
60
d)
I can't do mental math
43.
Voltage= 6
Coulomb= 3
Joules=?
Coulomb= 3
Joules=?
a)
2
b)
18
c)
9
d)
3
44.
Voltage=6
Joules= 12
Coulombs=?
Joules= 12
Coulombs=?
a)
2
b)
72
c)
18
d)
6
45.
What symbol is used to represent voltage?
a)
V
b)
J
c)
v
d)
C
46.
Coulombs=7
Voltage=7
Joules=?
Voltage=7
Joules=?
a)
1
b)
49
c)
114
d)
0
47.
What is the S.I. Unit of Current?
a)
Coulombs
b)
Ohms
c)
Amps
d)
Volts
48.
What is the S.I. Unit of Resistance?
a)
Coulombs
b)
Ohms
c)
Amps
d)
Volts
49.
The rate of flow of electrons in an electric current is called __.
a)
volts.
b)
watts.
c)
amperage.
50.
What does capacitor store?
a)
Charge
b)
Voltage
c)
Energy
d)
Power
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