Kinematics Question 309

Question: A 210 meter long train is moving due North at a of 25m/s. A small bird it’s flying due South a little above the train with speed 5m/s. The time taken by the bird to cross the train it’s [AMU (Med.) 2001]

Options:

A) $ 6s $

B) $ 7s $

C) $ 9s $

D) $ 10s $

Show Answer

Answer:

Correct Answer: B

Solution:

Relative velocity of bird w.r.t train $ =25+5=30\ m/s $ time taken by the bird to cross the train $ t=\frac{210}{30}=7\ sec $



NCERT Chapter Video Solution

Dual Pane