question_answer

  Two trains A and B start moving at the same time. The distances travelled by them in given intervals of time are shown below. State which train has uniform motion and which train has non-uniform motion.

Time	Distance travelled by train A (in km)	Distance travelled by train B (in km)
6.00 pm	0	0
6.15 pm	10	15
6.30 pm	20	24
6.45 pm	30	32
7.00 pm	40	38
7.15 pm	50	42
7.30 pm	60	47

Answer:

                                  Since train A travels equal distances in equal intervals of time i.e., in every 15 min, so the motion of train A is uniform motion. On the other hand, train B travels unequal distances in equal intervals of time i.e., in every 15 min, so the motion of train B is non-uniform motion.                                              (1)