Question

You launch a model rocket from ground level. It moves directly upward with a constant acceleration of 76.5 m/s2 for 1.25 seconds, at which point it runs out of fuel. Assuming air resistance on the rocket is negligible, what is the maximum altitude (above the ground) achieved by the rocket?

Answer 1

59.77 meters

Step-by-step explanation:

This is due to the equation of s = ut + (0.5)at², u is the initial distance, s is distance in meter, acceleration in m/s², speed in m/s and time in seconds.

The initial distance is 0 meters since it starts from the ground therefore:

s = (0)(1.25) + (0.5)(76.5)(1.25)²

s = 59.77 m is the maximum altitude achieved by the rocket.