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Motion & Forces I. Newton’s Laws of Motion Newton’s First Law Newton’s First Law of Motion An object at rest will remain at rest _________and an object in motion will continue moving at a constant velocity unless acted upon by a net _______. Force Inertia Also called the Law of _______. http://www.astro.ucla.edu/~colbert/cci.gif What is Inertia? Object’s resistance to changing position http://www.youtube.com/watch?v =8zsE3mpZ6Hw&safety_mode=tr ue&persist_safety_mode=1 Newton’s Second Law Newton’s Second Law of Motion The acceleration of an object is directly proportional to the net force acting on it and inversely mass proportional to its ________. F = ___ a m x ___ http://scratch.mit.edu/projects/MsMillersClass/297225 Newton’s Third Law Newton’s Third Law of Motion When one object exerts a force on a second object, the second object exerts an equal but __________ opposite ______ force on the first. http://www.youtube.com/watch?NR=1&v=ur40O6n QHsw&feature=endscreen Which Law???? 1. 2. 3. 4. 5. A VW beetle stopped at a red light lunches forward when a SUV strikes it from behind. As the large dog jumps from the boat to the pier, the boat floats in the opposite direction. In football running backs are generally smaller than tackles and guards because the use their lighter mass to get to the outside of the line. Race cars are built of light weight materials for greater acceleration during racing. During a wreck the man lunged forward toward the windshield until his progress was halted by the air bag. http://www.youtube.com/watch?v =vVd1tezgVK8&feature=related& safety_mode=true&persist_safety _mode=1 http://www.youtube.com/watch?v =8zsE3mpZ6Hw&feature=related &safety_mode=true&persist_safe ty_mode=1 http://teachertech.rice.edu/Partici pants/louviere/Newton/law1.html