Category : Science Projects And Inventions
YOU NEED:
Here is a trick to amuse your friends. You can tell them you have discovered a way by which you can throw the ball in
such a way that it will halt in midair, turn directions, and come to you. Your friends would like to see this trick. It is
not difficult to procure a bouncing ball made of hard rubber. You can get it a shop selling sports goods or even at
your neighborhood store. A little spin on such a ball makes it bounce. Now try this on table that is standing on a
hard surface. Throw the ball as shown in the ''illustration by the arrow marks. The ball will hit the table's underside;
reverse its direction and bounce back to you.
HOW DOES IT WORK?
As soon as the ball strikes below the table in a slant a strong backspin is created on the ball causing it to
bounce backward. You can try this too. Just toss the ball straight up in the air. Then say that you are also
able to drop the ball from a height of four feet, and it will not hit the floor. How does this happen? Drop it and
catch it with your hand.
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