Question

An automobile accelerates at 4 m/s^2 from 20 m/s to 36 m/s. How long did that acceleration take

Answer 1

Answer ; 4s

A = 4m/s^2 u=20m/s v=36m/s

Using Eq

V=U+at

36=20+4t

-20 -20

16=4t

4 4

Value of t comes out to be 4s