A train 150 metres long is moving at a speed of 25 kmph.

A train 150 metres long is moving at a speed of 25 kmph. It will cross a man coming from the opposite direction at a speed of 2 km per hour in :

Answer/Solution

20 sec

Steps/Work

Relative speed = (25+2) km/hr = 27 km/hr
= (27×5/18) m/sec = 15/2 m/sec.
Time taken by the train to pass the man =(150×2/15) sec=20 sec
ANSWER :A

Physics Calculator / Auto Solver

A train metres long is moving at a speed of kmph. It will cross a man coming from the opposite direction at a speed of km per hour in :

Calculated Answer

20

Step by Step Solution

In order to solve problem, you must evaluate (n₀ / 1000) / (n₁ + n₂) * 3600.

n₀ =	150
n₁ =	25
n₂ =	2

(n₀ / 1000) / (n₁ + n₂) * 3600
Evaluate n₀ / 1000 = 0.15
0.15 / (n₁ + n₂) * 3600
Evaluate n₁ + n₂ = 27
0.15 / 27 * 3600
Evaluate 0.15 / 27 = 0.0055555555555556
0.0055555555555556 * 3600
Evaluate 0.0055555555555556 * 3600 = 20
20
The answer to the problem and the result of (n₀ / 1000) / (n₁ + n₂) * 3600 is 20