Question

A rocket's acceleration is 6.0 m/s 2 . Assuming it starts at 0 m/s, how long will it take for the rocket to reach a velocity of 42 m/s?

250 s
0.14 s
7.0 s
290 s

Answer 1

7.0 s

Step-by-step explanation:

Because, the rocket accelaration is at 6.0 m/s^2 and if it starts form 0 m/s and reaches the velocity from 42 m/s.

Just divide the 6.0 m/s^2 / 42 m/s = 7.0 sec

Answer 2

at=v-u, where u=0

t= v/a=42/6 = 7
Answer: 7 seconds