MEASURING MOTION Force and Motion. Classifying Different Types of Motion Straight Line Motion Projectile Motion Circular Motion Vibrational Motion #1.

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Presentation transcript:

MEASURING MOTION Force and Motion

Classifying Different Types of Motion Straight Line Motion Projectile Motion Circular Motion Vibrational Motion #1

Calculate Speed Speed = Distance traveled Time taken to travel that distance Average Speed = Total Distance Total Time Examples #2

Motion Line Graph #3 Reminder Motion is distance over time X axis = Time Y axis = Distance

A Change in Motion A change in motion is the result of an unbalanced force acting upon an object. #4

WHAT IS A FORCE? Force and Motion

Forces Acting on an Object Object at rest Object in motion Object floating/sinking #5

Measuring Forces Forces are measured in Newtons. Forced can be measured by using a spring scale #6

Effects of Balanced and Unbalanced Forces Balanced Forces  Can cause an object to continue in motion at a constant speed.  Cam cause an object to remain at rest. Unbalanced Forces  Cause a change in motion.  Magnetic Force  Friction  Gravity  Push  Pull #7

GRAVITY A FORCE OF ATTRACTION Force and Motion

Gravitational Force of Attraction Every object exerts a gravitational force of attraction on every other object. #8

Gravitational Force acting between objects Gravitational force acting between objects is dependent upon the masses of the objects and the distance between them. How Mass Affects Gravitational Force How Distance Affects Gravitational Force #9

Weight An object’s weight is a measure of the gravitational force of a planet/moon acting on that object. #10

Circular Motion Circular motion of a moving object is the result of a force acting toward the center. #11

Examples 1. Kira jogs to a store 72m away in a time of 36s. What is Kira’s average speed? 2. If you travel 7.5km and walk for 1.5h, what is your average speed?

Object at Rest

Object in Motion

Object floating/sinking An object immersed in water is acted on by a buoyant force. This is a force caused by the pressure of the water on the object, and acts upwards against the force of gravity.

Mass and Gravitational Force Gravitational force between objects increases as the masses of the objects increase. Greater

Distance and Gravitational Force Gravitational Force between objects decreases as the distance between the objects increases. Greater