1.
A car is travelling at a velocity 10km/h10\,\text{km/h} on a straight road. The driver of the car throws a parcel with a velocity 102km/h10\sqrt{2}\,\text{km/h} with respect to the car, when the car is passing by a man standing on the side of the road. If the parcel is to reach the man, the direction of throw makes the following angle with the direction of motion of the car