1. Work and Power Problems
Answer of the following problems by showing work on a separate sheet of paper. The paper is due at the end of the class period.

2. Amy uses 20N of force to push a lawn mower 10 meters
Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do?

3. Joe balances a stationary coin on the tip of his finger 20cm from the top of the table. How much work is Joe doing?

4. Frank does 2400J of work in climbing a set of stairs
Frank does 2400J of work in climbing a set of stairs. If he does the work in 6 seconds, what is his power output?

5. How much power is required to pull a sled if you use 60J of work in 5 seconds?

6. How much work does an elephant do while moving a circus wagon 20meters with a pulling force of 200N?

7. If it takes 5 seconds for you to do 1000J of work, what is your power output?

8. A 900N mountain climber scales a 100m cliff
A 900N mountain climber scales a 100m cliff. How much work is done by the mountain climber?

9. A small motor does 4000J of work in 20 seconds
A small motor does 4000J of work in 20 seconds. What is the power of the motor in watts?

10. A woman runs a 1000 meters using a force of 210N and a power output of 500W. How long in minutes does it take this woman to complete 1000 meters?

11. How much power does a machine have if it does 6000 joules of work in one hour?