Question

A projectile if 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 seconds


12.5 seconds


25 seconds


6.25 seconds

Answer 1

@precal

Answer 2

@Its_A_Moot_Point

Answer 3

yes?

Answer 4

please help.. I'm like.. I took sleeping pills and I can't focus worth pencils.

Answer 5

haha ok

Answer 6

so do you know the equation for the axis of symetry?

Answer 7

yesssss

Answer 8

wait.. i'm confused..

Answer 9

why. the axis of symetry formula will hepl you find the vertex

Answer 10

really?

Answer 11

yes.

Answer 12

well, the answer I got was C.. but.. i'm not suree.

Answer 13

ok let me check you

Answer 14

thank you

Answer 15

ugh sorry my calculator is misbehaving...

Answer 16

o.o.. meh..

Answer 17

its b

Answer 18

Thank you.

Answer 19

yw