# Physical Science Schpt 2

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1. occurs when and object changes position
motion
2. to know wether or not the position of something has changed, you need a _____
refernce point
3. how far an object has moved
distance
4. the distance and direction of and objects change in position from the starting point
displacement
5. the speed at a given point in time
instantaneous speed
6. instantanteous speed is measured on a _____
speedometer
7. includes the speed of an object anf the direction of its motion
velocity
8. formula for velocity/speed=
s=d/t
9. the rate of change of velocity
acceleration
10. formula for acceleration=
a=v(f)-v(i)/t
11. the tendency of an object to resist anu change
inertia
12. an obejct moving at a constant velocity keeps moving at that velocity unless a net force acts on it
newtons first law(law of inertia)
 Author: reganlsu1@yahoo.com ID: 19389 Card Set: Physical Science Schpt 2 Updated: 2010-05-16 01:56:17 Tags: physical science chpt Folders: Description: science cpht 2 Show Answers: