Question

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

Answer 1

80 km / hr = 80 * 5 / 18 m / s = 400 / 18 m / s

60 km / hr = 60 * 5 / 18 = 300 / 18 m / s

a = V - U / t

= 300 / 18 - 400 / 18 ÷ 5

= - 100 / 18 ÷ 5

= - 100 / 18 * 1 /5 = - 20 / 18 = - 1 . 11 m / s ^2

Answer 2

v=80km/hr
u=60km/hr
t=5sec
a=?
V=22.2m/s
u=16.6m/s
a=v-u÷t
a=22.2-16.6÷5
A=11.2M/S square