Title: Efficiency lab
Purpose: Find the efficiency of three different spheres
Variables:
Manipulated Variable: the type of ball used
Responding Variable: height of the first bounce of the ball when it is dropped from 2m
Controlled Variables: the force applied on the ball, the height at which the ball is dropped, flat surface
Hypothesis: the efficiency of a sphere is going to depend largely on its mass and size, the less the mass and size, the higher that it will bounce, because the lesser the mass, the lesser amount of energy will be needed to push it up against the downward pull of gravity, and the smaller the size, the lesser friction air will create when it is bouncing up. This means that the golf ball is possibly going to be the one that bounces the highest and the most efficient, the tennis ball will bounce the second highest and the second most efficient, and the field hockey ball will bounce the third highest and the least efficient.