Get ready for the NCEA Level 1 Energy Test. Utilize flashcards and multiple choice questions with clear explanations and hints. Prepare for success!

Multiple Choice

What happens to the kinetic energy after impact (ignore air resistance)?

The main idea is that energy changes form during a collision. When the ball hits the ground, its kinetic energy doesn’t just vanish or stay all in the ball. The impact forces deform the surfaces a bit and generate friction inside the materials, which turns some energy into heat. It also creates sound as the surroundings respond to the impact. If the collision isn’t perfectly elastic, more energy is converted to these other forms and less remains as motion. Since energy is conserved, the initial kinetic energy becomes heat, sound, and deformation energy in the surroundings. That’s why the best description is that the kinetic energy is dissipated as heat, sound, and deformation in the surroundings.

The main idea is that energy changes form during a collision. When the ball hits the ground, its kinetic energy doesn’t just vanish or stay all in the ball. The impact forces deform the surfaces a bit and generate friction inside the materials, which turns some energy into heat. It also creates sound as the surroundings respond to the impact. If the collision isn’t perfectly elastic, more energy is converted to these other forms and less remains as motion. Since energy is conserved, the initial kinetic energy becomes heat, sound, and deformation energy in the surroundings. That’s why the best description is that the kinetic energy is dissipated as heat, sound, and deformation in the surroundings.