JEE Main 2024 Physics question
Train A is moving along two parallel rail tracks towards north with speed 72 km/h and train B is moving towards south with speed 108 km/h. Velocity of train B with respect to A and velocity of ground with respect to B are (in ms)
Answer: (C)
Solution
Taking north as positive, = +20 and = −30 m/s: = −30 − 20 = −50; = 0 − (−30) = +30.