engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Physics Motion in a Straight Line Relative Velocity
A girl standing on road holds her umbrella at 45° with the vertical to keep the rain away. If she starts running without umbrella with a speed of 15√2 kmh–1, the rain drops hit her head vertically. The speed of rain drops with respect to the moving girl is
1
30 kmh–1
2
\( \frac{25}{\sqrt{2}} \mathrm{kmh}^{-1} \)
3
\(\frac{30}{\sqrt{2}} \mathrm{kmh}^{-1}\)
4
25 kmh–1