Question

A bus travelling at 80 km/h changes its speed to 40 km/h. Find acceleration if the change in speed occurs in 20 seconds . I will give Brainliest.

Answer 1

Given, initial velocity (u) =80km/h

final velocity (v) =40km/h

time (t) =20seconds

Changing km/h into m/s

=80 x 5 ;. =40 x 5

18. 18

=22.22m/s ;. =11.11m/s

we know that,

acceleration= v - u

t

a= 11.11 - 22.22

20

a= -11.11

20

a= -0.55m/s

I hope this helped...

if this helped u pls leave a thank you