Heather hits a tennis ball upward with an initial speed of 32 feet per second. After how many seconds does the ball hit the ground? Use the formula h = rt − 16t^2 where h represents height in feet and r represents the initial speed.

Question

welshfella · Answer

when the ball hits the ground h wil be 0  ro you need to solve for t:-

32t - 16t^2 = 0

anonymous · Answer

would t = 2?
 just wanted to check this answer.

welshfella · Answer

yes

anonymous · Answer

Okay thank you. Would you mind helping me with another?

welshfella · Answer

16t(2 - t) = 0
t = 0 or 2 sec

(t = 0 is the time of 'take - off')

welshfella · Answer

sorry gotta go right now)

anonymous · Answer

okay thanks again