Question

A mailman performed 588 J of work lifting a box 1.4 m. How much force did the mailman use?

A. 450 N
B. 420 N
C. 252 N
D. 397 N

Answer 1

Well,

`force=energy/distance`
So given that, we know the answer is B. by doing the math.

Answer 2

The force is 420 N.

(B) is correct option.

Step-by-step explanation:

Given that,

Work done = 588 J

Distance = 1.4 m

We need to calculate the force

Using formula of work done

`W =F\cdot d`

`F=(W)/(d)`

Where, W = work

F = force

d = distance

Put the value into the formula

`F=(588)/(1.4)`

`F=420\ N`

Hence, The force is 420 N.