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Chapter 11 - Motion
Vocabulary for Chapter 11 on Motion
| Question | Answer |
|---|---|
| Acceleration | rate of change of velocity |
| Acceleration Formula | acceleration = (final velocity – original velocity)/time |
| Displacement | measures the change in position of an object (includes direction) |
| Inertia | measures an object’s tendency to remain at rest or to stay in constant motion |
| Speed | rate of change of position |
| Speed Formula | speed = distance/time |
| Velocity | rate of change of displacement |
| Velocity Formula | add two velocities if same direction and subtract if they are opposite directions |
| Mass | quantity of matter in an object and a measure of the object’s inertia |
| Kinetic Energy | energy of matter in motion |
| Energy | ability to cause change |
| Law of Conservation on Momentum | states that if no outside forces act on a group of objects, the momentum of the group will not change |
| Law of Conservation of Energy | states that energy can not be created or destroyed |
| Gravitational Potential Energy | energy an object could potentially gain if it falls |
| Momentum | product of mass and velocity (quantity of motion for an object) |
| Momentum Formula | momentum = mass x velocity |