An elastic collision is a collision where the total kinetic energy of the system remains constant. In simpler terms, no kinetic energy is converted into other forms of energy like heat or sound. This usually occurs when objects bounce off each other without any deformation. To solve elastic collision problems, we typically use the conservation of momentum and the conservation of kinetic energy.
The equations used are:
Match the terms with their definitions:
| Terms | Definitions |
|---|---|
| 1. Kinetic Energy | A. A collision where kinetic energy is conserved. |
| 2. Momentum | B. The energy an object possesses due to its motion. |
| 3. Elastic Collision | C. A measure of mass in motion. |
| 4. Inelastic Collision | D. A collision where kinetic energy is NOT conserved. |
| 5. Conservation | E. The principle that a certain physical property remains constant. |
(Answers: 1-B, 2-C, 3-A, 4-D, 5-E)
Complete the following paragraph using the words: momentum, kinetic energy, conserved, elastic collision, velocity.
In an ________, both ________ and ________ are ________. This means the total ________ of the objects before and after the collision remains the same.
(Answers: elastic collision, momentum, kinetic energy, conserved, velocity)
Explain, in your own words, why it is impossible to have a perfectly elastic collision in real life.
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