Question

a bus was moving with a speed of 54 km per hour on applying brake it stop it in 8 seconds calculate the acceleration

Answer 1

The answer of this question is 6.7 km/s^2.

Answer 2

u=54km/hr=15m/sec

v=0m/sec

t=8sec

a=v-u/t

=0-15/8

=-15/8

therefore ,a=-1.8m/sec^2