A ball is dropped...

Question

Two identical rubber balls are dropped from different heights. Ball 1 is dropped from a height of 16 feet, and ball 2 is dropped from a height of 64 feet. Write and graph a function for the height of each ball. Then use the graphs to tell when each ball will reach the ground.

Answer 1

h(t)=-16t^2 + 16 for ball 1

h (t)=-16t^1 +64 for ball 2

1st ball will hit the ground when -16t^2 +16 = 0, t= 1 second

2nd ball will hit the ground when -16t^2 +64 = 0, t = 2 seconds