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Rebecca jogs in place for two minutes before her track meet. Rebecca weighs 100 pounds. Which of the following statements is true?



A Rebecca has done 200 foot-pounds of work.

B Rebecca has not done work because she has not moved a distance.

C Rebecca would accelerate more quickly is she weighed 120 pounds.

D Rebecca has done 100 foot-pounds of work.

Verified Answer :

laurarose

The answer is A because it was 2 minutes and she weighs 100 lbs.... so 2(100)=200.... 200 lbs of work

nmarcionni

Answer:

B. Rebecca has not done work because she has not moved a distance.

Explanation:

In physics, work represents the amount of energy necessary for a force to move a body a certain distance.

\(W=F.d\), where F is the force, d the distance and W the work of the force F.

Since Rebecca jogs in place, the distance is zero, an so does the work.

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