Question

If a horse does 4000 J of work over 20 m, how much force does the horse use?

200 N
2,000 N
2 N
20,000 N

CAN ANYONE EXPLAIN TO ME HOW TO SOLCE THIS

Answer 1

In physics, a force is said to do work if, when acting, there is a displacement of the point of application in the direction of the force. It is calculated by the formula W = f x d. Therefore, we calculate the problem above as follows:

W = f x d
4000 = f x 20
f = 200 N <----- FIRST OPTION