Which of the following is an elastic collision?
(1 point)
• Two hands clapping.
• Two balls of modeling clay hitting each other.
• An apple falling to Earth from a tree.
• A ping-pong paddle hitting a ball.
(1 point)
• Two hands clapping.
• Two balls of modeling clay hitting each other.
• An apple falling to Earth from a tree.
• A ping-pong paddle hitting a ball.