Question

A train starting from rest abtains a velocity of 72 km/h in 5 minutes assuming that the acceleration is uniform find the acceleration and the distance traveled by the train for attaining this velocity

Answer 1

First we have to do conversion of 72km/h to m/s

1 hour = 3600 seconds

And

1 kilometer = 1000m

So for conversion we take,

72×1000/3600 = 20m/s

Now it's converted.

Now

Now we have to apply to the formula of acceleration i.e = final velocity - initial velocity / time

5 minutes is 300 seconds.

20-0/300 = 1/15m/s²

That is the acceleration. (i)

Wait for the second one this is enough long