Physics Terms

2. The state or quality of being efficient.
5. A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force.
7. An increase or decrease in the magnitude of a property (e.g. temperature, pressure, or concentration) observed in passing from one point or moment to another.
10. The rate at which someone or something is able to move or operate.
13. The force by which a planet or other body draws objects toward its centre.
15. The rate of change of velocity per unit of time.
16. An influence that causes the motion of an object with mass to change its velocity
18. The energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.

1. A force, velocity, or other vector quantity which is equivalent to the combined effect of two or more component vectors acting at the same point.
3. The principle by which the total value of a physical quantity or parameter remains constant in a system which is not subject to external influence.
4. A state in which opposing forces or influences are balanced.
6. Vector whose length is the shortest distance from the initial to the final position of a point P undergoing motion.
8. Energy which a body possesses by virtue of being in motion.
9. A body's relative mass or the quantity of matter contained by it, giving rise to a downward force; the heaviness of a person or thing.
11. An amount of space between two things or people.
12. A coherent, typically large body of matter with no definite shape.
14. The speed of something in a given direction.
17. The strength and vitality required for sustained physical or mental activity.