Question

A train starting from railway station attains a speed of 21m/s in one minute . Find its acceleration ?

Answer 1

Answer:

Explanation:3/10 m/s

Answer 2

Before the train started the train was at rest therefore initial velocity =0=u

acceleration =v-u/t

= 21-0/60. (1 min = 60 secs)

=7/20 m/s

acceleration=7/20 m/s