Question

A bus decreses its speed from 80 km/hr in 5 second. find the accelation of the bus.​

Answer 1

u = 80/hr = 80×5/18 = 200/9 m/s

v = 60 km/hr = 60×5/18=150/9m/s

t= 5 sec = 5/3600hr

a=?

a = v-u/t

a= 150/9-200/9/5

= -50/9 ×1/5=-10/9m/s

=-1.1 m/s