Physics

5. A projectile is an object upon which the only force acting is gravity.
6. a quantity that has both magnitude and direction. It is typically represented by an arrow whose direction is the same as that of the quantity and whose length is proportional to the quantity's magnitude.
7. is a vector quantity that refers to "the rate at which an object changes its position."
9. are quantities that are fully described by a magnitude (or numerical value) alone.
13. When two forces acting on an object are not equal in size, we say that they are
14. states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

1. When two forces acting on an object are equal in size but act in opposite directions, we say that they are
2. the path that an object with mass in motion follows through space as a function of time.
3. is a vector quantity that is defined as the rate at which an object changes its velocity.
4. the universal force of attraction acting between all matter.
8. is a push or pull upon an object resulting from the object's interaction with another object. Whenever there is an interaction between two objects,
10. a force that is caused by air. The force acts in the opposite direction to an object moving through the air.
11. the quantity of matter which a body contains, as measured by its acceleration under a given force or by the force exerted on it by a gravitational field.
12. This tendency to resist changes in their state of motion is described as