Question

A 1,000 kg boulder rolls 75 m down a mountain doing 735,000 J of work. What force was acting on the boulder?

A. 9.8 N
B. 7,500 N
C. 9,800 N
D. 73,500 N

Answer 1

F = ma
m: mass
a: acceleration due to gravity
F = 1000×9.81
= 9810
Approximates to 9800 N

Hope it helped!

Answer 2

The force acting on the boulder bringing it down the mountain? Would be gravity. Not sure about any of the multiple choice options you have