Question

a car starting from rest acquires a velocity 180ms-1 in 0.05h.find the acceleration

Answer 1

Acceleration = $\frac{v-u}{t}$

0.05 h= 180s
=$\frac{180-0}{180}$
=1 m/s²

Answer 2

a= v-u/t 
here, t= .05 h = 3 min = 180 s
and, u = 0
so a = 180 - 0 / 180 = 1 m/s^2