Question

a mailman performed 180 j of work lifting a box 0.8 m. how much force did the mailman use?
a. 275 n
b. 200 n
c. 225 n
d. 250 n

Explanation:

Step1: Recall the work formula

Work \(W = F\times d\), where \(W\) is work, \(F\) is force, and \(d\) is distance.

Step2: Solve for force \(F\)

Rearrange the formula to \(F=\frac{W}{d}\). Given \(W = 180\space J\) and \(d=0.8\space m\), then \(F=\frac{180}{0.8}\).
Calculate \(\frac{180}{0.8}=225\space N\).

Answer:

C. 225 N