Physical science

6. a course along which someone or something moves.
8. the force that attracts a body toward the center of the earth, or toward any other physical body having mass.
10. the velocity that can escape from the gravitational field of the solar system
11. strength or energy as an attribute of physical action or movement.
12. simply the difference in the position of the two marks and is independent of the path taken
14. The velocity of an object will not change unless the object is acted on by an outside force.
15. defined by taking the fixed numerical value of the caesium frequency

1. keeping or showing a balance; arranged in good proportions.
2. a force which acts on an object without coming physically in contact with it
3. when the negative value of one vector is added to the positive value of another vector
4. force that resists the sliding or rolling of one solid object over another
5. a vehicle's capacity to gain speed within a short time.
7. the rate at which someone or something is able to move or operate.
9. denoting an additional element, ingredient, etc.
13. a tendency to do nothing or to remain unchanged.