Unit: Work and energy
Year: 1990 Question#: 18
Question: The graph shows the force exerted on a block as a function of the block's displacement in the direction of the force. How much work did the force do in displacing the block 5.0 meters?
(1 ) 0 J
(2 ) 20.0 J
(3 ) 0.80 J
(4 ) 4.0 J
What is this question really asking?
Explanation by: Adam C.
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Answer 1
0 J
INCORRECT
If you displace an object any distance you are doing work. Try one of the formulas and solve for work. return to top
Answer 2
20.0 J
CORRECT
GREAT!!!!
Use the formula W=F
sW=F
sW=(4.0N)(5.0m)
W= 20 Nm = 20 J return to top
Answer 3
0.80 J
INCORRECT
You didn't use the correct formula. Try to find one on the refrence table where you can solve for work.
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Answer 4
4.0 J
INCORRECT
You didn't use the correct formula. Try to find one on the refrence table where you can solve for work. return to top
What's this question really asking?
It's asking if you can find and use the correct formula to solve for work. return to top
