Motion An object is in motion if ___________ from another object ______________.

Reference Point A place or object used for _________ to determine if an object is ___________. The ______is the reference point.

Distance an object travels/unit of time. Speed Speed =

Units used: Speed Speed = Distance Speed = Time

Constant Speed Speed ________ ___________. (like cruise control—no stopping, no speeding up, no slowing down)

Average Speed ______ _________ traveled in the ______ __________ of time. (like driving to Chicago—stop lights, traffic jams, rest stops)

Velocity Speed in a ________ _____________. When you know _______ _______ and the ____________ an object is traveling, you know its velocity.

Speed Practice Problem It took Ms. Ericson 14 seconds to run the 100 meter dash at the 1968 Olympics. What was her speed? IFSMU

Acceleration _____ at which ________ (speed in a certain direction) changes. ___________ speed, ___________ speed, or ___________ ___________.

Acceleration Formula Velocity final -Velocity initial Acceleration = Time

Acceleration Units Velocity final -Velocity initial Acceleration = Time m/s – m/s Acceleration = sec = _____

Practice Problem You are sitting on your bike at the top of a hill. You start riding and at the bottom of the hill you are going 5 m/s. It takes you 2 seconds to get to the bottom of the hill. What is your acceleration? Solve using IFSMU I FSMU