If you perform 10 joules of work lifting a 10-n box from the floor to a shelf, how high is the shelf?
a. 1 m
b. 2 m
c. 10 m
d. 100 m

A. 1 m

Explanation:

The work done to lift the box is equal to the product between the force applied and the distance covered by the box:

In this case, the force applied is equal to the weight of the box (F=10 N), and we know that the work done is W=10 J, so we can rearrange the formula to calculate the distance d:

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