Physic

2. the strength and vitality required for sustained physical or mental activity.
4. a numerical quantity or value.
7. the force exerted on the mass of a body by a gravitational field.
9. an amount of space between two things or people.
12. an arithmetical value, expressed by a word, symbol, or figure
13. an influence tending to change the motion of a body or produce motion or stress in a stationary body.
14. the rate at which something happens or is done.
15. a quantity having direction as well as magnitude, especially as determining the position of one point in space relative to another.

1. an instrument for measuring and sometimes recording the time or amount of something
3. a metric unit of length equal to 1000 meters
5. the speed of something in a given direction.
6. the International System of unit of time measurement
8. a period of time equal to a twenty-fourth part of a day and night and divided into 60 minutes.
10. rate at which velocity changes with time, in terms of both speed and direction
11. measure the time taken by a process or activity, or a person doing it.