Question

A bus decreases its speed from 80 km h-1 to 60km h-1 in 5 seconds. Find the acceleration of the Bus.

Answer 1

u=80*5/18=200/9 m/sec
v=60*5/18=150/9 m/sec
t=5 sec
a=v-u/t
150/9-200/9/5
a=-50/9*1/5
a=-10/9 m/sec2