cayamaritneychwie cayamaritneychwie

25-11-2016
Physics

Answered

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

Verified Answer :

MissPhiladelphia MissPhiladelphia

26-11-2016

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

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