Physics

2. the rate at which an object covers distance
5. the ratio of useful energy or power output from a system to the total energy or power input
6. the form of energy that an object or particle possesses due to its motion.
7. 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.
10. strength or energy as an attribute of physical action or movement.
11. the speed of something in a given direction.
12. 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.
13. 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.
14. something which doesn't change
16. the length of the space between two points.

1. a large body of matter with no definite shape
3. the action of moving something from its place or position.
4. stored energy based on an object's position or configuration within a force field
8. the state of an object in which two or more counter influences
9. he rate at which an object changes its velocity, representing a vector quantity that includes both magnitude and direction.
12. the force that attracts a body towards the centre of the earth, or towards any other physical body having mass
15. the fundamental capacity of a system to do work, cause change, or produce motion