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Newton’s First Law - Principle of Inertia UNLESS…… An unbalanced force acts upon the object Mass is a measure of an object’s inertia. The greater the object’s mass the harder it is to change the object’s speed or direction of motion. …then it will change its motion.
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Newton’s First Law - Principle of Inertia
An object’s natural tendency is to continue what it is doing
WHICH MEANS……
- An object moving in a straight line at constant speed will remain that way.
When you go partying on a Friday night you don’t want to stop partying…your inertia keeps you going!
Friday Night Rule
Newton’s First Law - Principle of Inertia
- An object at rest will also remain that way.
When you wake up on Saturday morning after partying all night you don’t want to get out of bed….your inertia resists your parents’ efforts to get you up
Saturday Morning Rule
Newton’s First Law - Principle of Inertia
UNLESS……
An unbalanced force acts upon the object
Mass is a measure of an object’s inertia.
The greater the object’s mass the harder it is to change the object’s speed or direction of motion.
…then it will change its motion.
