A train running at the speed of 84 km/hr passes a man walking in oppo…

Question

A train running at the speed of 84 km/hr passes a man walking in opposite direction at the speed of 6 km/hr in 4 seconds. What is the length of train (in meter)?

Accepted Answer

Option C. 100 m. Answer & Solution Answer: Option C Solution: & Let length of train & = l\, metre & Time & = total distance relative speed in opposite direction & 4 \, = \, l + 0 ( 84 + 6 ) × 518 m/s & 4\, = l90 × 518 & \,l\, = \,100\, m & length of the train = 100 m