Question

A bus starts from rest and attains a speed of 54 km per hour in 10 seconds. What will be the acceleration of the train?

Answer 1

Step 1:Given data:

1. Initial velocity = u = 0 (starts from rest).
2. Final velocity = v = 54km/h = 15m/s.
3. Time = t = 10s.

Step 2:Finding the acceleration of the train:

We know from the first equation of motion,

$v=u+at$

Where u and v are the initial and final velocities, a is a constant acceleration, and t is time.

$a=\frac{v-u}{t}$

Putting values of v, u, and t,

$a=\frac{(15-0)}{10}=\frac{15}{10}=1.5m/s^2$

Therefore, the acceleration of the train is 1.5 m/s².