Question

A projectile is fired straight upward with an initial velocity of 400 feet per second. The height of the projectile, h(t), if represented by the function h(t) = - 16t2 + 400t where t is the time in seconds.

How long does it take the projectile to reach the maximum height?



2500 sec


25 sec


12.5 sec


6.25 sec

Answer 1

its not 25 sec

Answer 2

oh.....

Answer 3

i know 😒

Answer 4

Do you know how to take the derivative of that f(t) ??

Answer 5

You would use the power rule.