Across
- 3. The total energy of a system, which is the sum of its kinetic energy and potential energy.
- 4. A visual tool used in physics to represent and analyze the energy transformations and transfers within a system.
- 7. A force that does not cause energy to be lost from a system. Examples include gravity and spring force. The work done depends only on the start and end points, not the path.
- 10. The energy of motion. It is calculated using Ek = 1/2mv^2.
- 11. Energy Energy that is stored in an object due to its position or shape, such as a stretched spring or an object held above the ground.
Down
- 1. A force that causes energy to be lost from a system, often as heat or sound. Examples include friction and air resistance. The work done depends on the path taken.
- 2. A principle or theorem that states the work done on an object is equal to its change in kinetic energy: W = ΔEk.
- 5. The potential energy an object has because of its height above the ground. It is calculated using Ep = mgh.
- 6. The transfer of energy when a force moves an object over a distance. It is calculated using W = Fcosθd.
- 8. The ratio of the total work (energy) output from a machine to the total work (energy) put into the machine, expressed as a percentage
- 9. The unit of energy, work, and heat. It is defined as the amount of energy transferred when a force of one newton acts over a distance of one meter.
- 11. The rate at which work is done or energy is transferred in a system. It measures how quickly energy is used or transferred over time.