Question

. Calculate the time required to gain velocity of 30m/s from 20m/s with acceleration of 5m/s^2

Answer 1

Explanation:

v=u +at

30=20+5t

t=2 sec

Answer 2

Answer: 2 s.

Explanation:

Given that,

$u=20 m/s\\v=30 m/s\\a=5 m/s^{2}$  

We know that,

$v=u+at\\\frac{v-u}{a}=t\\\frac{30-20}{5}=t\\\frac{10}{5}=t\\t=2s$