A bouncy rubber ball is dropped from a height of about a metre above the ground .it falls to the ground, bounces and then rises back to almost the height from which it was dropped. Describe the main energy transformations that take place from the point at which the ball first touches the ground until the point it leaves the ground again.
Gravitational potential energy is converted into kinetic energy and then into sound energy.
Is that correct help plz
i need the answers to the conductors and insulators quiz from connections
academy
Yes, you're on the right track! Here's a more detailed explanation of the energy transformations that occur when the ball is dropped, bounces, and then rises back up:
1. Gravitational Potential Energy: When the ball is held at a height above the ground, it possesses potential energy due to its elevated position. As it is released, this potential energy is converted into kinetic energy.
2. Kinetic Energy: As the ball falls towards the ground, the potential energy is steadily transformed into kinetic energy. Kinetic energy is the energy possessed by an object due to its motion. The ball gains speed as it falls, and therefore its kinetic energy increases.
3. Collision and Elastic Potential Energy: When the ball reaches the ground, it collides with the surface. This collision compresses the ball, momentarily storing the kinetic energy as elastic potential energy within the ball itself. This elastic potential energy allows the ball to deform upon collision.
4. Sound Energy: During the collision with the ground, some of this stored energy is transferred and dissipated as sound energy. The ball vibrates after impact, creating sound waves propagating through the air. This is why we hear a "bounce" sound.
5. Elastic Potential Energy to Kinetic Energy: As the ball rebounds, the stored elastic potential energy is converted back into kinetic energy. The ball starts to regain its original shape and accelerates upward.
6. Kinetic Energy to Gravitational Potential Energy: As the ball moves upwards, its kinetic energy is gradually converted back into gravitational potential energy. This happens as the ball slows down while moving against the force of gravity.
Overall, the main energy transformations that occur from the point the ball first touches the ground until it leaves the ground again are the conversion between gravitational potential energy to kinetic energy, followed by the conversion between kinetic energy to elastic potential energy (during collision), and then back to kinetic energy again. Additionally, some of the energy is transformed into sound energy during the collision with the ground.