A train of 150 m length is going towards north direction at a speed of 10 ms -1. A parrot flies at a speed of 5 ms -1 towards south direction . parallel to the railway track. The time taken by the parrot to cross the train is equal to

Question

A train of 150 m length is going towards north direction at a speed of 10 ms -1. A parrot flies at a speed of 5 ms -1 towards south direction . parallel to the railway track. The time taken by the parrot to cross the train is equal to (A) 12 s (B) 8 s (C) 15 s (D) 10 s

Tardigrade Admin · Accepted Answer

Relative velocity of the parrot w.r.t. the train =[10-(-5)] m / s =15 m / s Time taken by the parrot to cross the train =(150/15)=10 s

Q. A train of $150 m$ length is going towards north direction at a speed of $10 m s^{- 1}$ . A parrot flies at a speed of $5 m s^{- 1}$ towards south direction . parallel to the railway track. The time taken by the parrot to cross the train is equal to

12 s

8 s

15 s

10 s

5s

Relative velocity of the parrot w.r.t. the train
$= [10 - (- 5)] m / s = 15 m / s$
Time taken by the parrot to cross the train
$= \frac{150}{15} = 10 s$

Q. A train of 150m length is going towards north direction at a speed of 10ms−1. A parrot flies at a speed of 5ms−1 towards south direction . parallel to the railway track. The time taken by the parrot to cross the train is equal to

12 s

8 s

15 s

10 s

5s

Relative velocity of the parrot w.r.t. the train =[10−(−5)]m/s=15m/s Time taken by the parrot to cross the train =15150​=10s

Q. A train of $150 m$ length is going towards north direction at a speed of $10 m s^{- 1}$ . A parrot flies at a speed of $5 m s^{- 1}$ towards south direction . parallel to the railway track. The time taken by the parrot to cross the train is equal to

Relative velocity of the parrot w.r.t. the train
$= [10 - (- 5)] m / s = 15 m / s$
Time taken by the parrot to cross the train
$= \frac{150}{15} = 10 s$