Question

1. Take two balls. Let one of them stand stable at the centre of a table.
2. Place the second ball on the table and push it so that it hits the first ball.
3. What happens when the second ball hits the first one?
4. From where did the second ball get the energy to set the first ball in motion?

Answer 1

• When the moving second ball hits the first ball, it transfers some of its energy to the first ball. As a result, the first ball, which was at rest, starts moving. The second ball may slow down or change its direction.
• The second ball got energy from the force applied by our hand while pushing it. This energy made the second ball move. When it struck the first ball, some of this energy was transferred to the first ball and set it in motion.