Question

A bus decreases its speed from 80 km/h to 50 km/h in 5 seconds. Find the acceleration of the bus

Answer 1

Answer:

u=80km/hr =22.2m/s

v=50km/hr=13.8m/s

time,=5sec

acceleration =?

v=u+at

13.8=22.2+a x 5

13.8 - 22.2=5a

-8.4=5a

-8.4/5=a

-1.68m/s^2 =acceleration

if the sign is negative that means that the bus was de accelerating and there was retardation

plz mark as brainliest

Answer 2

Answer:

a=v-u÷t

t=5÷3600=1÷720

a=50-80÷1÷720

a=-30×720

a=-21600km/hr