Work and Energy Principles in Physics
Interactive Video
•
Physics, Science, Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Hard
Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of doing positive work on an object?
The object loses energy.
The object gains energy.
The object's speed decreases.
The object's direction changes.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which formula is used to calculate work when force and distance are known?
Work = Force / Distance
Work = Force x Distance x sin(theta)
Work = Force x Distance x cos(theta)
Work = Force x Distance
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the work done by gravity when an object is lowered with constant speed?
Negative MGH
Zero
Depends on the object's mass
Positive MGH
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why do centripetal forces do no work on an object?
They are too weak.
They act in the opposite direction of motion.
They act perpendicular to the direction of motion.
They act in the same direction as motion.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the work-energy principle state?
Total work done equals the change in potential energy.
Total work done equals the change in gravitational energy.
Total work done equals the change in thermal energy.
Total work done equals the change in kinetic energy.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which type of energy does an object have if it is at a height h?
Thermal energy
Elastic potential energy
Gravitational potential energy
Kinetic energy
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the unit of power?
Joules
Watts
Newtons
Volts
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