Question

define acceleration a bus decreases its speed from 80 kilometre per hour to 60 km per hour in 5 second find the acceleration of the bus

Answer 1

80 kmph=21.6 ms
60kmph=16.2 ms
$acceleration \: = \frac{v - u}{t} \\ \frac{5.4}{5} = 1.08$
so acceleration =-1.08ms2
HOPE IT HELPS

Answer 2

Acceleration is the rate of change of velocity. u=80×5/18,v=60×5/18,t=5s.it is v-u/t