Question

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

Answer 1

Initial velocity (u) = 0
FInal velocity (v) = 21 m/s
Time taken (t) = 60s
a = v-u / t
= 21 - 0 / 60
= 0.35 m/s²
hope this will help

Answer 2

                                                              hii :)
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here            
                     Initial velocity of train-- 0 m/s
                    final velocity of car= = 21 m/s
                     Time ==  1 min or 60 sec
                 accleration= ?

We know a= v-u/t
 
                  a= 21-0/60
 
                 a = 0.35 m/s²

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