A boy applies a force of 20 N to pull his sleigh for 150 m - Leaving Cert Physics - Question (b) - 2022

To calculate the work done by the boy, we use the formula:

$W = F imes d$

where:

• $W$ is the work done (in joules),
• $F$ is the force applied (in newtons), and
• $d$ is the distance moved (in meters).

Given:

• $F = 20 \, N$
• $d = 150 \, m$

Substituting the values into the formula:

$W = 20 \, N \times 150 \, m = 3000 \, J$

Therefore, the work done by the boy is 3000 joules.