Question

A bicycle increased its velocity from 18 km/h to 54 km/h in 10 second calculate the acceleration

Answer 1

acceleration = (final velocity - initial velocity) / total time

= (54000 - 18000) / 10

= 36000 / 10

= 3600 m/s²

Answer 2

We know 1km/h = 0.278m/s
18km/h = 18 × 0.278 = 5.004m/s
54km/h = 54 × 0.278 = 15.012m/s
we have acceleration
a = (v-u)/t
where v is final velocity
u is intial velocity
and t is the time

a = (15.012-5.004)/10
= 10.008/10
= 1.0008m/s^2