An elementary student kicks a ball straight into the air with a velocity of 16 feet/sec. If acceleration due to gravity is −32 ft/sec2, how many seconds after it leaves his foot will it take the ball to reach its highest point? Assume the position at time t = 0 is 0 feet.

a: 1.25
b: 6
c: 0.50
d: Cannot be determined

Question

An elementary student kicks a ball straight into the air with a velocity of 16 feet/sec. If acceleration due to gravity is −32 ft/sec2, how many seconds after it leaves his foot will it take the ball to reach its highest point? Assume the position at time t = 0 is 0 feet.

a: 1.25
b: 6
c: 0.50
d: Cannot be determined

anonymous · Answer

what is the formula you have to use?

anonymous · Answer

unprovided :(

primeralph · Answer

v = u+gt
at highest point, v = 0
so 0 = 16-32t
Solve for t

anonymous · Answer

2 :) thank u!!!!!!!!!!!!!!!!!!!!!

anonymous · Answer

not an option

primeralph · Answer

It's not 2.

anonymous · Answer

-16=-32t
divide by -32 on both
before i erase this i caught my mistake.
0.5!!!!!!! thanks :)

primeralph · Answer

Yeah.