Question

A model rocket is launched from the ground with an initial velocity of 352 ft/sec.

How long will it take the rocket to reach its maximum height? Show all work in the space provided.

Answer 1

@welshfella

Answer 2

use one of the equations for motion at constant acceleration
initial velocity u = 352, acceleration a = -32, v = 0 and s = distance
so we use

v^2 = u^2 + 2as

solve for s

Answer 3

10.9 seconds? @welshfella

Answer 4

??? - the answer is a distance - there is no time involved in this formula

Answer 5

It says how long does it take to reach it's maximum height

Answer 6

oh ! sorry - i misread the question

use the v = u + at
0 = 352 - 32t

Answer 7

t = 352/32 = ?

Answer 8

11 seconds. @welshfella

Answer 9

right on

Answer 10

Thanks :)

Answer 11

yw