Question

A ball is thrown into the air with an initial upward velocity of 45ft/s. Its height (h) in feet after t seconds is given by the function h = -16t^2 + 45t + 6. After about how many seconds will the ball hit the ground. A. 3, B. 4, C. 5, D. 6
Please help me ASAP. Will Fan and Medal

Answer 1

can you help me @Qwertty123

Answer 2

or help me @Maddy1251

Answer 3

or help me @Anna1448

Answer 4

or anybodyelse

Answer 5

You want to solve for 't' if memory serves me correctly.

Answer 6

yes

Answer 7

yes so would it be either
3, 4, 5, or 6 for (t) seconds

Answer 8

can you help me @Qwertty123

Answer 9

i have to get eat some breakfast when i get back please i hope you have gave me an answer.

Answer 10

you could do the equations OR
you could just recognize that (conservation of energy) the ball will slow to a stop and fall from that point and then achieve the same velocity it had at the original point

so, 15 m/s

Answer 11

Can you help me @lilkg77