Question

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

Answer 1

A. 1 m

Step-by-step explanation:

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

`W=Fd`

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:

`d=(W)/(F)=(10 J)/(10 N)=1 m`

Answer 2

using newton law
d=W/F
d=10/10
d=1m
so the shelf is 1m high.