Question

A $150$ meter long train is moving towards north with a velocity of $10m/s$. A parrot is flying in the south direction parallel to train at $5m/s$. The time taken by the parrot in crossing the train is

• A. $12s$
• B. $8s$
• C. $15s$
• D. $10s$

Answer 1

Answer: (D)

$10s$

Velocity of train with respect to parrot $v=5+10=15$
$t=\frac{l}{v}=\frac{150}{15}=10seconds$