Question

Jacob kicks a soccer ball off the ground and in the air with an initial velocity of 33 feet per second. Using the formula H(t) = −16t2 + vt + s, what is the maximum height the soccer ball reaches?

15.1 feet

16.5 feet

17.0 feet

18.2 feet

Answer 1

@HawkCrimson

Answer 2

brb 1 sec

Answer 3

okydoky

Answer 4

@Mertsj

Answer 5

have you taken calculus?

Answer 6

plug in the 33 for velocity and find the vertex. The y coordinate of the vertex is the maximum

Answer 7

no @ekmath

Answer 8

then nevermind

Answer 9

I assume that s is the initial height?

Answer 10

no clue... ;/

Answer 11

Somewhere it tells you what v and s represent. You need to find that.

Answer 12

give me a sec

Answer 13

H(t) = objects current height
t = time in air
v = starting upward velocity
s = objects starting height

Answer 14

So since the object is on the ground, its starting height is 0 and s = 0. So replace v with 33, s with 0 and find the vertex of the parabola.

Answer 15

ok

Answer 16

how do i find the vertex?

Answer 17

The x coordinate of the vertex is -b/2a. Find it first.

Answer 18

H(t) = (33 - 16t) t ? thats what u want me to find?