Question

a bis starting from rest mobes with a uniform acceleration of 0.2m/s square from three minutes .find the velocity acquired

Answer 1

Since the bus starts from rest, initial velocity, u=0
Acceleration,a=0.2 m/s2
Time, t=3*60=180 second
Final velocity, v = u + at
                         = 0 + (0.2)*180
                         = 36m/s

Answer 2

I hope it helps you