Science

3. strength or energy as an attribute of physical action or movement.
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.
6. the rate at which someone or something is able to move or operate.
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. a coherent, typically large body of matter with no definite shape.
12. a force that changes the position, speed or direction of the object to which it is applied.
14. the action or process of moving or being moved.

1. a vehicle's capacity to gain speed within a short time.
2. the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
4. the frictional force air exerts against a moving object.
7. the resistance that one surface or object encounters when moving over another.
8. an amount of space between two things or people.
10. the speed of something in a given direction.
11. the fundamental unit of length in the metric system, equal to 100 centimeters or approximately 39.37 inches.
13. the SI unit of force. It is equal to the force that would give a mass of one kilogram an acceleration of one meter per second per second