Question

speed of bus increase from 20m/s to 60m/s in 10 seconds. calculate acceleration of bus

Answer 1

accelaration = v-u/t
here v=60
u=20
therefore 60-20/10
40/10
4 m/s2
therefore acceleration =4m/s2

Answer 2

Given
The speed of bus at initial (u) = 20 m/s
Final speed of bus (v) = 60 m/s
Time taken by the bus = 10 s
Acceleration (a) = (v - u)/t
                           = (60 m/s - 20 m/s)/10 
                           = 40/10
                           = 4 m/s²

The acceleration of the bus = 4 m/s².

Hope my answer helps you.