1. Work is defined as the transfer of energy that occurs when a force acts on an object and causes it to move in the direction of the force.
2. The unit for work is the joule (J).
3. Work is calculated as the product of the force applied and the distance moved in the direction of the force: W = F × d.
4. We typically measure force in newtons (N) and distance in meters (m).
5. One joule is equal to one newton-meter (N·m).
6. We use machines to make work easier by changing the magnitude or direction of the force required, not by reducing the total amount of work done.
7. Machines are able to do work because they transfer energy from one form to another or from one place to another.
8. Energy is the capacity to do work.
9. Kinetic energy is the energy of motion; potential energy is stored energy due to position or condition.
10. Energy cannot be created or destroyed; it can only be transformed from one form to another or transferred from one object to another.
11. Some systems can store energy. These are known as conservative systems.
12. Energy cannot be created or destroyed; it can only be transformed from one form to another or transferred from one object to another.
13. Power is the rate at which work is done or energy is transferred.
14. The unit for power is the watt (W), which is equal to one joule per second (J/s).
Parent Tip: Review the logic above to help your child master the concept of work energy and power worksheet answer key.
