Question

Question 3
A train starting from a railway station and moving with uniform acceleration attains a speed 40 kmph in 10 minutes. Find its acceleration.

Answer 1

Given, initial velocity of the train, u = 0,
final velocity of the train, $v=40kmph=40\times \frac{5}{18}=11.11ms{}^{-1}$
Time taken, $t=10minutes=10\times 60=600s$
We know, acceleration, $a=\frac{v-u}{t}=\frac{11.11-0}{600}=0.0185m{s}^{-2}$
Hence, the acceleration of the train is $0.0185m{s}^{-2}$.