Work and Power

Open Ended

A student pushes a desk 2 m across the floor using a constant force of 25 N. How much work does the student do on the desk? ( Include your units!)

Open Ended

A child pushes a toy truck 2.5 m across a floor with a constant force of 22 N. How much work does the child do on the toy ruck? ( Include your units!)

Open Ended

A boy does 18 J of work in 2 s on his backpack as he lifts it from a table.

How much power did the boy use on the backpack?

( Include your units!)

Open Ended

A child pulls a wagon, doing 360 J of work in 8 s.

How much power is exerted?( Include your units!)

Open Ended

A motor applies a 5,000 N force and raises an elevator 10 stories. If each story is 4 m tall, how much work does the motor do? (Include your units!)

Open Ended

Calculate the power, in watts, needed to mow a lawn in 50 minutes if the work required is 500,000 J. (Include your units!)