Forces & Motion

5. the amount of matter that makes up an object
7. described by magnitude and direction
8. the rate of change in velocity
10. acceleration of an object is directly proportional to the net force and indirectly proportional to the mass
15. an object’s ability to resist a change in motion
16. when one object exerts a force on a second object, the second object
18. moving point from which motion is measured
20. the force of gravity on an object
21. forces on an object that are equal in size and opposite in direction
22. change in position in relation to a reference point
23. how far an object is from the starting point

1. speed at a given instant
2. a speed that does not change
3. how far an object travels
4. a property of any moving object because of its mass and speed
6. described by magnitude only
8. force that air exerts on a moving object to stop its motion
9. maximum velocity reached by a falling object
11. object at rest will remain at rest and object in motion will remain in motion unless acted on by a net force
12. unbalanced forces that change the velocity of an object
13. total distance divided by total time
14. rate of motion
17. force of attraction between any two objects in the universe
19. speed with a direction