How can you throw a ball as hard as you can and have it come back to you, even if it doesn't bounce off anything? There is nothing attached to it, and no one else catches or throws it back to you?
We can throw a ball in upward direction (towards sky) as hard as we can, without bouncing or touching anything it will come back to us.
Throw the ball straight up in the air.
What is the easiest way to throw a ball and have it stop and completely reverse direction after travelling a short distance?
A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?
A man takes a basketball and throws it as hard as he can. There is nothing in front, behind, or on either side of him, and yet, the ball comes back and hits him square in the face. How can this be?