Question

question 9 of 10
a toy performs 100 j of work pushing a chair a distance of 4 m. how much
force does the boy use? assume there is no friction.
a. 400 n
b. 25 n
c. 100 n
d. 200 n

Explanation:

Step1: Recall the work formula

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

Step2: Rearrange the formula to find force

We need to find \(F\), so \(F=\frac{W}{d}\). Given \(W = 100\space J\) and \(d=4\space m\).

Step3: Calculate the force

Substitute the values into the formula: \(F=\frac{100}{4}=25\space N\)

Answer:

B. 25 N