Question

07.
If a trains of length 200 cm moving with a constant
velocity takes 10 sec to cross an electric pole,
then the time taken by the train to cross a bridge
of length 400 mis :
1) 20 sec
2) 10 sec
3) 30 sec
4) None of these​

Answer 1

Answer:

1)20 seconds

Explanation:

in 10 sec=200

for 400cm=10x2 (uniform acceleration)

so, 20 seconds.