Question

tommy does 15 joules of work to push the pencil over 2 meters. how much force did he use? show all work to earn full credit.

Explanation:

Step1: Recall the work formula

The formula for work is \( W = F \times d \), where \( W \) is work, \( F \) is force, and \( d \) is distance. We need to solve for \( F \), so we can rearrange the formula to \( F=\frac{W}{d} \).

Step2: Substitute the given values

We know that \( W = 15 \) Joules and \( d = 2 \) meters. Substituting these values into the formula, we get \( F=\frac{15}{2} \).

Step3: Calculate the force

Calculating \( \frac{15}{2} \) gives us \( 7.5 \) Newtons (since the unit of force in the SI system, when work is in Joules and distance in meters, is Newtons).

Answer:

The force Tommy used is \( 7.5 \) Newtons.