Objectives

• Explain how you can tell an object is moving.
• Describe how you can calculate speed.
• Distinguish between speed and velocity.
• Describe how you can calculate acceleration.
• Describe the acceleration of an object in free fall.
• Describe how the distance fallen per second changes for an object in free fall.
• Describe what the slope of a speed-versus-time graph represents.
• Describe how air resistance affects the motion of falling objects.
• Explain the relationship between velocity and acceleration.