Two balls are projected from the same point in the direction inclined at 60º and 30º to horizontal. If they attain the same height what is the ratio of their velocities of projection? What is the ratio if they have the same horizontal range? A person is standing on a truck moving with a constant velocity of 14.7 m/s on a horizontal road. The man throws a ball in such a way that it returns to the truck after the truck has moved 58.8 m. Find the speed and the angle of projection
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