Question

If you perfom 30 joules of work lifting a 20-N box from the floor to a shelf how high is the shelf ​

Answer 1

1.5 m

Step-by-step explanation:

it just is its easy made A on test

Answer 2

Answer: 1.5 m

Explanation: E=mgh=Fh

30 J = 20 N * h

h = 30/20 = 1.5 m