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 :

Options

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

Answer

D

Explanation

Time taken `= ("distacne")/("relative velocity") = (150)/(10 + 5) = 10 s.`