Question

a bus is moving with a speed of 72 km per hour on applying brakes it comes to rest in 5 seconds find the acceleration and the distance travelled by the before coming to rest

Answer 1

Initial velocity (u)=72km/hr
Final velocity (v)=0km/hr(since brakes are applied)
t=5s
a=v-u/t
=-72/5
=-14.4km/hr ^2