Chapter Objectives:

• Explain the idea that motion is relative.
• Define speed and distinguish between instantaneous speed and average speed.
• Distinguish between speed and velocity, and describe how to tell whether a velocity is changing.
• Define acceleration and give examples of its units.
• Describe the motion of an object in free fall.
• Describe the motion of an object thrown straight up and allowed to fall until it hits the ground.
• Determine the speed and the distance fallen at any time after an object is dropped from rest, when air resistance is negligible.
• Explain how graphs can be used to describe relationships among time, distance, and speed.
• Describe how air resistance affects the motion of falling objects.
• Explain why acceleration is a rate of a rate.
  

Chapter Terms:

• speed
• velocity
• acceleration
• free fall

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Chapter Formulas:

Speed = distance/time

Average Speed = total distance covered/time interval

Acceleration = change of velocity/time interval

Acceleration (along a straight line) = change in speed/time interval

Velocity acquired in free fall from rest: v = gt

Distance fallen in free fall from rest: v = ½ gt²

Chapter Outline Framework:

• Motion is Relative
  • Instantaneous Speed
  • Average Speed
• Velocity
• Acceleration
  • Accelerationon Galileo's Inclined Planes
• Free Fall
• How Fast
• How Far
• How Quickly How Fast Changes
• Hang Time

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