1. A 600-g basketball is dropped from a height of 1 m to the floor. Roughly how much kinetic energy does it have just before hitting the floor? (Assume g, the acceleration of gravity, is 10 m/s2.) Note: use conservation of energy to find the total energy of this object where potential energy is mass × height × g, and kinetic energy is ½ mass × speed2. 2. A 600-g basketball is observed to rebound to one-half of its height above the floor when it is dropped. What fraction of its energy did it lose during its bounce?
3. A bounce pass of the same basketball from one player to another takes place from a height of 1 m to a height of 1 m. If the receiving player receives the ball when it has zero vertical speed, what vertical kinetic energy did the passing player provide to the ball? (Assume g is 10 m/s2.) Kinetic energy is ½ mass × speed2. Potential energy is mass × height × g.
4. What was the vertical speed of the pass when it left the hands of the first player?
5. A 2 kg ball is thrown upwards with a speed of 5 m/s. What is the maximum height the ball will reach? Use g = 10 m/s2.
6. The ball falls back down from its maximum height past your hand an extra 1 meter and hits the ground. How much energy does the ball have when it hits the ground?