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Energy Problem Set Worksheet

1. A model glider has a mass of 1 kg. How much potential energy does it have 2 meters off the ground?
2. The same model has a velocity of 2.2 m/s. How much kinetic energy does it have?

3. If the same model descends 2 meters and all it's potential energy is converted to kinetic energy, what is the glider's change in velocity?

4. A full-sized glider has a weight of 4,900 N, while it's pilot has a weight of 825 N. If it is 1,000 meters off the ground, how much potential energy do the plane and pilot have?

5. The same glider from Problem 4 has a velocity of 35 m/s. How much kinetic energy does it have?

6. The same glider from Problem 4 has a velocity of 35 m/s. The glider descends 900 meters. What is it's new velocity?

7. Compare the velocity you calculated in Problem 6 to the speed of sound. Is this answer reasonable? Why or why not?