Question

A rocket is launched vertically upwards from the ground. The rocket travels with uniform acceleration to rest. After 8.0 seconds, the rocket's speed is 120 m/s. Calculate the acceleration.

Answer 1

The acceleration of a rocket launched vertically upwards with a uniform acceleration, reaching a speed of 120 m/s in 8 seconds, is calculated to be 15 m/s².

Step-by-step explanation:

To calculate the acceleration of a rocket that travels uniformly to rest, we can use the kinematic equation v = u + at, where v is the final velocity, u is the initial velocity (which is 0 m/s in this case since the rocket starts from rest), a is the acceleration, and t is the time.

Rearranging the equation to solve for acceleration, we get a = (v - u) / t. Plugging in the values given in the question, we have:

a = (120 m/s - 0 m/s) / 8.0 s = 15 m/s²

The acceleration of the rocket is 15 m/s².