Solved: PHYSICS Question for NEET

NEET PHYSICSEasy

A 150 m long train is moving to north at a speed of 10 m/s. A parrot flying towards south with a speed of 5 m/s crosses the train. The time taken by the parrot to cross the train would be:

30 s

15 s

8 s

10 s

Step-by-Step Solution

Relative Velocity: The train and the parrot are moving in opposite directions (North and South). The relative speed ( $v_{rel}$ ) is the sum of their individual speeds . $v_{rel} = v_{train} + v_{parrot}$ $v_{rel} = 10 \text{ m/s} + 5 \text{ m/s} = 15 \text{ m/s}$
Time Calculation: The time ( $t$ ) taken to cross is the total relative distance (length of the train) divided by the relative velocity. $t = \frac{\text{Length}}{v_{rel}}$ $t = \frac{150 \text{ m}}{15 \text{ m/s}} = 10 \text{ s}$

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