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Force, Work, And Power
Test Description: Review questions
Instructions: Answer all questions to get your test result.
1) In which of the following situations is work being done?
A
A man puts a 50 N force on a wall but does not move the wall.
B
A woman lifts a rock with a force of 5N.
C
A pushes down on a rock with a force of 10 N and the rock remains stationary.
D
A puck slides across the ice rink at a constant velocity after it has been hit.
2) In which of the follow situations is work not being done?
A
A small bulldozer pushes a pile of dirt across the ground with a force of 150 N.
B
Susanna lifts a letter to read it, using a force of 0.2 N.
C
A weightlifter holds a weight above his head using a force of 200 N.
D
Johnny lifts a textbook from the floor to the top of his desk using a force of 3 N.
3) Which of the following are not units which work could be measured in?
A
J
B
N*m
C
Kg x m2/s2
D
N/m
4) Work is measured in the same units as which of the following quantities?
A
acceleration
B
distance
C
force
D
energy
5) Which of the following statements is true?
A
A larger force always means more work has been done.
B
In order for work to be done, a force must move an object over a distance.
C
Whenever a force is put on an object, work is being done.
D
Whenever an object moves, work is being done.
6) Which of the following statements best describes the relationship between work and force?
A
Work is equal to force multipled by Joules.
B
Work is inversely proportional to force.
C
Work is proportional to force, when the force moves an object over a distance.
D
Work and force are equal to one another.
7) An object is lifted 10 meters using a force of 200 Newtons. Which of the following would increase the amount of work done?
A
Moving the object sideways using the same amount of force over the same distance.
B
Lifting the object 8.5 meters.
C
Lifting the object 15 meters.
D
Changing the force to 175 N.
8) Which of the following is the correct formula for calculating work?
A
W=d/F
B
W=F/d
C
W=Fd
D
WF=d
9) How much work would you have to do in order to lift a 50 N object 3.5 meters?
A
14.3 J
B
175 J
C
150 J
D
50.5 J
10) In which of the following situations would the least work have been done?
A
A 200 N force lifts an object 3 meters.
B
A 500 N force is applied to an object but it does not move.
C
A 125 N force moves an object 4 meters.
D
A 350 N force moves an object 1 meter.
*select an answer for all questions
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