Question
CIVICS > ELECTION_COMMISSION
1) A train 110 metres long is running with a speed of 60 kmph. In what time will it pass the man who is running at 0 kmph in the direction opposite to that in which the train going
A) 5 secB) 6 sec
C) 7 secD) 10 sec
View Answer        RRB_SE_Green_Answer_key_2014
Answer : 6 sec

egin{aligned}\ ext{Let Distance D = 110 m}\ ext{Relative speed of train and man = 60 + 6}\ ext{ = 66 kmph (Since both are in moving in opposite direction)}\ ext{= }frac{66 * 10}{36} ext{ mps }\ ext{= }frac{110}{6} ext{ mps}\ Time = frac{distance}{speed}\ = frac{110}{left(frac{110}{6} ight)}\ = 6 s end{aligned}



QNO
User Name
E-Mail
Comment