Question

. Two trains are moving in opposite direction on parallel tracks.
If velocity of one is 40 km/h and 60 km/h of other, then their
relative velocities is
(a) 20 km/h
(b) 100 km/h
(c) 0
(d) 25 km/h​

Answer 1

Answer:

(b) 100 km/h.

Step-by-step explanation:

If two objects are moving parallel to each other then,

Relative velocity is sum of two individual velocities for opposite direction and Relative velocity is difference of two individual velocities for same direction.

Here trains are moving in opposite direction so,

relative velocity is (60+40) i.e 100km/h.

           Hope it helps.