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Introduction To Energy And Work
Test Description: A review of class for energy, work, and power.
Instructions: Answer all questions to get your test result.
1) Kinetic energy is defined as...
A
acting energy
B
none of the above
C
Stored energy
D
working energy
2) Potential energy is defined as
A
all of the above
B
working energy
C
stored energy
D
Heat energy
3) Jasmine runs a 400 m dash with a force of 50 N. How much work was done?
A
2000 cm
B
2000 j
C
2000 watts
D
1000 j
4) Billy pushed a sled 53 m with a force of 20 N. How much work was done?
A
1025 j
B
1000 j
C
50 j
D
1060 j
5) It took 30 seconds for Elias to do work of 50 j on a barbell. How much power was applied?
A
1250 watts
B
50 watts
C
1500 watts
D
70 watts
6) Bill did work on a sled at 50 j, it took him 12 s. How much power was applied?
A
200 watts
B
600 watts
C
400 watts
D
5 watts
7) power is defined as
A
Amount of force over a given distance.
B
energy
C
power
D
How quickly work can be done.
8) Work is only done if the force or part of the force acts in the same direction as the motion of an object.
A
True
B
False
9) If you apply a force and the object does not move, are you doing work?
A
no
B
yes
C
so
D
maybe
10) work is defined as
A
the use of force to move an object over a distance
B
work
C
amount of time it takes to move something
*select an answer for all questions
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