Question

A bus decreases its speed from 60 km/hr to 40 km/hr in 5 second, find the acceleration of the
bus.​

Answer 1

initial velocity:60 km/hr = 360m/sec

final velocity:40 km/hr = 160 m/sec

time:5sec

we know that,

acceleration=final velocity - initial velocity / time = (160-360)/5 = -(200/5) = -40 m/sec^2

hope my answer helps you