Question

A boy on a bicyle increases his velocity from 5m/s to 20 m/s in 10 seconds.

Answer 1

v=u+at

20=5+a*10

a=1.5

Answer 2

v= 20m

u= 5m

t= 10 sec

a = v-u/t

a = 20- 5 /10

$a \: = \: 1.5m \: {s}^{ - 2}$