What units is work measured in?

If a tow truck brings a car weighing 900
N a distance of 100 m, how much work is done? (Show your work!)

A 7 kg ball is rolling down a hill with
an acceleration of 5 m/s2 for 70 meters. How much work did gravity
do? (Show your work!)

What is the mathematical equation to calculate
power?

What units is power measured in?

How much power did you put into the effort
if you are biking with 200 J of work for one minute? (Show your work!)

How long would a machine doing 500 J of
work have to run to have a power output of 95,000 Watts? (Show your work!)

Copyright Alexplorer. Some items taken from or adapted from other materials. This page is free for use in a classroom setting.

Back
to the Physical Science index |