Question

2. A train 200 m long passes a telegraph pole in 15 seconds. Find:
(1) its speed in km/hr,
(i) the time taken by it to cross a bridge 450 m long.​

Answer 1

Answer:

Correct Answer:

40 km/hr, 40.5 sec

Step-by-step explanation:

v = dt=20018×185 = 40 kmph

t = (250+200)200×18 = 40.5 sec.

Answer 2

Step-by-step explanation:

v=d/t

=200/18×18/5

=40kmph

t=(250+200)/200×18

=40.5sec