VOCABULARY

3. resistance refers to forces which act on a solid object in the direction of the relative fluid flow velocity
6. influence that causes an object to undergo a certain change
7. force two forces acting on opposite directions on an object
8. friction when two objects are moving relative to each other and rub together
10. acceleration when the velocity is changing by a constant amount each second
11. friction force resisting the motion when rolling on the surface
12. a state in which an object has no actual weight
13. any object projected into space
15. friction when a solid object is moving through a liquid or gas it would be?
16. the product of the mass and velocity of an object
18. force when two forces acting on an object are not equal size
19. third law according to this law For every action there is an equal and opposite re-action
21. magnitude of its velocity
22. area of ground that tends evenly upward or downward
23. the force that attracts a body toward the center of the earth, or toward any other physical body having mass.

1. the resistance of any physical object to any change in its motion
2. fall any motion of a body where its weight is the only force acting upon it.
4. any movement or change in position or time
5. force force that makes a body follow a curved path
9. rate at which the velocity of a body changes with time
14. velocity the velocity of the object when the sum of the drag force
17. friction two surfaces that slide together
20. friction friction between two or more solid objects that are not moving relative to each other