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WorksheetsPhysics
Total questions: 23
Worksheet time: 57mins
Name
Class
Date
1.
What does a free-body diagram represent?
a)
The energy of the object
b)
Forces acting on an object
c)
Direction of the object
d)
Position of the object
2.
What is the unit for power?
a)
Joule
b)
Newton
c)
Pound
d)
Watt
3.
If someone lifts a box with a force of 313N and a distance of 255 centimeters how much work has he done?
a)
70,425 Joules
b)
798.15 Joules
c)
75,250 Watts
d)
798.15 Watts
4.
If you drop a ball, ignoring air resistance, what happens to the total energy?
a)
The total energy increases
b)
The total energy decreases
c)
The total energy stays the same
d)
There is no energy when dropping a ball
5.
Which of the following statements are false about work?
a)
Work is a form of energy
b)
A Watt is the standard metric unit for work
c)
Units of work would be equivalent to a Newton times a meter
d)
A kg*ms2/s2 would be a unit for work
6.
How much work does a person do when they push a box a distance of 4 meters and apply a force of 10N?
a)
40 Joules
b)
4.00 Joules
c)
.4 Joules
d)
40 Watts
7.
How much work do you do if you push a cart with a force of 22.5N and a distance of 7.25 meters?
a)
3.10 Nm
b)
163.12 Nm
c)
163.12 J
d)
There are 2 correct answers
8.
What is the kinetic energy of a jogger with a mass of 65.0 kg traveling at a speed of 2.5 m/s?
a)
162.5 J
b)
406.25 J
c)
203.13 J
d)
507.25 J
9.
What is the mass of a baseball that has a kinetic energy of 100 J and is traveling at 5 m/s?
a)
10 kg
b)
8 kg
c)
100 kg
d)
2 kg
10.
What is the kinetic energy of a 0.5 kg soccer ball that is traveling at a speed of 3 m/s?
a)
9 J
b)
2.25 J
c)
8 J
d)
4.5 J
11.
What is the kinetic energy of a pie that is thrown at 10 m/s and weighs 1 kg ?
a)
10 J
b)
25 J
c)
100 J
d)
50 J
12.
Energy is defined as...
a)
the ability to do work.
b)
people have energy.
c)
only plants have energy.
d)
there is no definition for energy.
13.
Find the gravitational potential energy of a light that has a mass of 13.0 kg and is 4.8 m above the ground.
a)
611.52
b)
555.89
c)
650.60
d)
234.98
14.
An apple in a tree has a gravitational potential energy of 175 J and a mass of 0.36 g. How high from the ground is the apple?
a)
25.27
b)
50
c)
49.58
d)
73.10
15.
A marble is on a table 2.4 m above the ground. What is the mass of the marble if it has a PE of 568 J.
a)
18.90 kg
b)
31.24 kg
c)
25.00 kg
d)
24.15 kg
16.
A box with a mass of 12.5 kg sits on the floor. How high would you need to lift it for it to have a GPE of 355J ?
a)
2.00
b)
2.90
c)
2.40
d)
5.60
17.
What happens to Gravitational Potential Energy as height increases?
a)
It increases
b)
It decreases
c)
It stays the same
18.
How do you calculate Power?
a)
Work x 2
b)
Work x Times
c)
Work / Time
d)
1/2 Work
19.
If a 70% efficient machine produces 476 Joules, what was the input?
a)
33,320 Joules
b)
333.2 Joules
c)
680 Joules
d)
476 Joules
20.
How efficient is a system that outputs 70 Joules of the 100 Joules put into it?
a)
70
b)
.70%
c)
700%
d)
70%
21.
Do Planets experience Gravitational Potential Energy?
a)
Yes
b)
No
22.
What is "g" in the equation PE = mgh?
a)
Forces acting on an object
b)
Velocity
c)
Acceleration due to Gravity
23.
When does Earth have the highest Gravitational Potential Energy?
a)
Summer and Spring
b)
Spring and Autumn
c)
Summer and Winter
d)
It stays the same
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