Hailstones falling vertically with a speed of 10 m s
−1, hit the wind screen (wind screen makes an angle
30o with the horizontal) of a moving car and rebound elastically. Find the velocity of the car if the driver finds the hailstones rebound vertically after striking.
![985170_b15db3adfc0f441b9bd8cf50595791f3.png](https://search-static.byjusweb.com/question-images/toppr_invalid/questions/985170_b15db3adfc0f441b9bd8cf50595791f3.png)