Question

3. 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

@welsh please help me!

Answer 2

Formula vf = vi + a*t

Answer 3

At the top of its trajectory, an object will have vf = 0 m/s. 352 feet converts to 107.3 meters, and the acceleration of gravity acting on an object is -9.8 m/s/s. Armed with that knowledge, you simply plug what you know into the equation:

0 = 107.3 + -9.8*t
t = 10.9 seconds