Question

A train starting from a railway station and
moving with uniform acceleration attains a
speed 40 kmh-in 10 minutes. Find its
acceleration​

Answer 1

Let initial velocity be = 0 m/sec

Let initial Time be = 0 sec

We have,

Final velocity= 40 km/h (convert it into m/sec)

                      = 40 * 5 / 18

                      = 100/9 m/sec

Time = 10 minutes (convert it into seconds)

        = 10 * 60 (as in 1 minute there are 60 secs)

        = 600 seconds

NOW,

Acceleration = change in velocity / time taken for change

                     =  100/9 - 0  /   600 - 0

                     =   100/9  / 600

                     =  100/9 * 1/600

                     = 1/54  or 0.01 m/sec ^ 2  (answer)

                     

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