Question

A driver of train travelling at a speed of 15m/s applies brakes and retards the
train uniformly. The train stops in 5 seconds. Another train B is travelling on a
parallel track with a speed of 10m/s. its’ driver applies the brakes and the train
stops in 10 seconds retarding uniformly. (a) Plot speed-time graphs for train A
and Train B on the same paper. (b) Calculate graphically which of the trains
travelled farther after the brakes were applied

Answer 1

Answer:

To get the distance travelled by the two trains we will use the formula :

Distance = speed × time

Train A:

15 × 5 = 75 M

Train B:

10 × 10 = 100 M

We are plotting the graph of velocity against time.

Find the graph in the image below.

Since it is retardation, the graphs slope downwards from initial velocities to zero.