Question

a bus decreases its speed by 80 kmph in 5 seconds. Then acceleration of the bus is

Answer 1

there will be deacc and convert 80kmph to mps - 40/9 m/s²

Answer 2

Hi

it is not acceleration it is deceleration

we know
a=v/t
v velocity
t is time
here
v=80km/hr=80*5/18=22.22m/s
t=5s

so
a=22.22/5=4.4m/s^-2

hope it help