Motion Notes

Frame of Reference

·A system of objects that are not moving with respect to one another.

·Relative Motion is movement in relationship to a Frame of Reference.

http://www.youtube.com/watch?v=qQVDAMzo4mE

http://www.youtube.com/watch?v=7VqOYvoEMnQ

http://www.youtube.com/watch?v=FaEZZ43WrTQ

Distance & Displacement

·Distance is the length of the path between two points.

·Displacement is the straight line distance between two points - shows both the distance & direction from the starting point to the ending point.

http://www.youtube.com/watch?v=atAgzYH6Sj0

http://www.learnerstv.com/animation/animation.php?ani=%2026&cat=physics

i

Speed

·Speed = Distance/Time

·Units: m/s, mph, km/hr

Speed

Velocity

·Velocity = Distance/Time in a given direction

·Units: m/s North, mph South, km/hr NE

http://www.youtube.com/watch?v=DRb5PSxJerM&feature=related

Speed and Velocity by They Might Be Giants

Acceleration

·a = Final Velocity - Initial Velocity

Time

·Units: m/s2, mphps , km/hr/min

Deceleration

·d = Initial Velocity - Final Velocity

Time

·Units: m/s2, mphps , km/hr/min