A train 200 m long enters at 5 m/s ...
Question
Fullscreen

A train 200 m long enters at 5 m/s and exits at 3 m/s from a bridge 300 m long. The time taken by it is (1) 125 s (2) 500 s (3) 260 S (4) 50 s

JEE/Engineering Exams
Physics
Solution
136
Rating
5.0 (1 ratings)
Fullscreen
( U=30 m / s, v=50 m / s ) total distance ( =200+300=500 m ) ( v^{2}-u^{2}=2 a s ) ( (50)^{2}-(30)^{2}=2 times 500 times a ) ( 1600=1000 a ) ( a=0.16 m / s^{2} ) ( v=u+a^{*} t ) ( 50=30+0.16 t ) ( 0.16 t=20 ) ( t=20 / 0.16=125 s e c )
Quick and Stepwise Solutions Just click and Send Download App OVER 20 LAKH QUESTIONS ANSWERED Download App for Free