Relative MotionMediumQuestion 5219
Question
A train moves at 60 km/h and a car moves at 40 km/h in the same direction. The velocity of the car relative to the train is:
- A100 km/h
- B20 km/h
- C−20 km/hCorrect
- D50 km/h
Correct answer
−20 km/h
Explanation
Relative velocity of car w.r.t. train = 40 − 60 = −20 km/h. The negative sign means the car moves backward relative to the train.