Question

A bus decrease its speed from 80km/h to 60km/h in 5sec.find the acceleration of bus.​

Answer 1

Answer:

Initial speed u=80 km/h=80×

18

5

=22.22 m/s

Final speed v=60 km/h=60×

18

5

=16.67 m/s

Using v=u+at

Or 16.67=22.22+α×5

⟹ a=−1.1 m/s

2

Answer 2

Explanation:

speed decrease=80-60=20km/h

a=v-u/t

20-0/5

=4km/h