A train moving at 72 km/h passes a man walking at 6 km/h in the same direction.

A train moving at 72 km/h passes a man walking at 6 km/h in the same direction. How fast does the train appear to be moving to the man?

A train moving at 72 km/h passes a man walking at 6 km/h in the same direction. How fast does the train appear to be moving to the man?

Correct Answer: 66 km/h

Step 1: Identify the speed of the train, which is 72 km/h.
Step 2: Identify the speed of the man, which is 6 km/h.
Step 3: Since both the train and the man are moving in the same direction, we need to find the relative speed.
Step 4: To find the relative speed, subtract the speed of the man from the speed of the train: 72 km/h - 6 km/h.
Step 5: Calculate the result: 72 - 6 = 66 km/h.
Step 6: The relative speed, or how fast the train appears to be moving to the man, is 66 km/h.

Relative Speed – The speed of one object as observed from another moving object, calculated by subtracting the speeds when both are moving in the same direction.