Which of the following is the best example of simple harmonic motion? A. Wave X has half the amplitude of wave Y
B. Wave X has twice the amplitude of wave Y
C. Wave X has a lower frequency and longer wavelength of wave Y
D. Wave X has a higher frequency in a shorter wavelength of wave Y

Match the words or actions and their definition. 1. the rate of doing work 2. a machine that changes motion 3. the force that is used to generate electricity 4. 550 foot-pounds per second 5. the force that makes things fall toward the earth 6. work in > work out 7. metric measurement of work 8. the product of force times distance water falling from a dam newton-meter gravity work windmill power the work principle 1 horsepower