Question

The graph shows the motion of two vehicles A and B. Which one of them is moving with greater speed?
(a) A
(b) B
(c) both A and B are moving with the same speed.
(d) Cannot say from these graphs.
graph

Answer 1

(a) A

We know:

Speed = Distance/Time

The above relation shows that the speed of a vehicle is greater if it covers maximum distance in a given interval of time. To compare the distances, draw a line perpendicular to the time axis.

It is now evident that for a given time t, the distance covered by vehicle A is more than that covered by vehicle B. Hence, vehicle A is moving with a greater speed.