1. If you drop a ball from a height of 1 meter and the ball rebounds to a height of 51 centimeters, what fraction of kinetic energy was lost?

2. If you drop a ball onto a surface from a height of 1 meter and the ball rebounds to a height of 29 centimeters, what is the coefficient of elasticity for the ball?

3.Using the first definition of coefficient of elasticity given in the lab (based on velocity), if a ball strikes a surface with a speed of 10 m/s and rebounds just after the collsion with a speed of 8 m/s, what is the coefficient of elasticity?