2 years ago

A tennis ball is launched straight up from a height of 4 feet with an initial velocity of 64 feet per second. Use the

1 answer:

4 0

When the ball hits the ground,

h=0

vt�16t^2=0

64t-16t^2=0..

t(64-16t)=0

t=0 (reject, not reasonable)

64-16t=0

16t=64

t=64/16=4

How long will it take for the ball to hit the ground? 4 seconds

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