Work & energy quiz

Five questions on Work & energy. Answer all 5 to see your score.

0 of 5 answered

Question 1 of 5

A 20 N push moves a crate 3.0 m in the direction of the push. How much work does the push do?

Question 2 of 5

A 2.0 kg book is released from rest and falls 1.5 m to the floor. What is its kinetic energy just before impact? Use g = 9.8 m/s^2.

Question 3 of 5

A 100 N force pulls a sled 5.0 m at 30 degrees above the horizontal. How much work does the force do on the sled?

Question 4 of 5

An 800 kg car brakes from 20 m/s to a full stop. How much work do the brakes do on the car?

Question 5 of 5

A spring with k = 500 N/m is compressed 0.20 m and releases a 0.40 kg block horizontally along a frictionless track. How fast is the block moving after it leaves the spring?

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