Final Exam - Physics Vocabulary

3. The force exerted on an object due to gravity. It is equal to the mass of the object multiplied by the acceleration due to gravity. It is measured in Newtons.
4. The amount of matter in an object. It is measured in kilograms.
6. The product of force and displacement in the direction of the force. It is measured in joules.
8. Advantage The ratio of output force to input force in a machine.
10. Devices designed to make work easier by either increasing force or changing the direction of force.
13. Machines Machines composed of two or more simple machines working together.
14. Transfer The movement of energy from one place or form to another.
16. Energy Energy that is stored in an object due to its position relative to other objects. It is often associated with gravitational or elastic forces.
17. The unit of force in the International System of Units (SI). One Newton is the force required to accelerate a one-kilogram mass by one meter per second squared.
19. Capacity The amount of heat energy required to raise the temperature of a substance by one degree Celsius or Kelvin.

1. The unit of energy in the International System of Units (SI). One joule is equal to the work done when a force of one Newton is applied over a distance of one meter.
2. Efficiency The ratio of output work to input work in a machine.
5. Machines Basic mechanical devices with few or no moving parts, such as levers, pulleys, wedges, screws, inclined planes, and wheels and axles.
7. Energy Energy possessed by a moving object. It is proportional to the mass of the object and the square of its velocity.
9. Anything that has mass and occupies space.
11. A push or pull that can cause an object to accelerate, decelerate, or deform. It is measured in Newtons.
12. Force The force applied to a machine or system.
15. capacity to do work.
18. Force The force exerted by a machine or system.