Motion An object is in motion if ___________ from another object ______________.
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Transcript of Motion An object is in motion if ___________ from another object ______________.
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 =
DistanceSpeed =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?
I F S M U
Acceleration
• _____ at which ________ (speed in a certain direction) changes.
• ___________ speed, ___________ speed, or ___________ ___________.
Acceleration Formula
Velocityfinal-VelocityinitialAcceleration =
Time
Acceleration Units
Velocityfinal-VelocityinitialAcceleration =
Time
m/s – m/sAcceleration =
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 F S M U