Newtons 1st Law Object wants to be in it’s natural resting place

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Presentation transcript:

Newtons 1st Law Object wants to be in it’s natural resting place -For an object to move a force must be acting on the object Once in motion no push or pull is needed to keep it moving -Force is needed only to change motion

INERTIA NEWTONS 1st LAW: An object at rest will remain at rest, an Whether at rest or moving every object in motion resists change of motion NEWTONS 1st LAW: An object at rest will remain at rest, an object that is moving at constant velocity will continue moving unless acted upon by an outside force

Mass vs. Weight SI Unit for: MASS = Kilogram (kg) Mass is the quantity of matter in an object Weight is gravitational force exerted on an object by nearest most massive body (EARTH) SI Unit for: MASS = Kilogram (kg) there are 1,000 grams (g) in a kilogram person = about 45 kg small car = about 1,000 kg mass of a nickel = about 5 g Unit for: WEIGHT = newton (N) 1 kg brick weighs about 9.8 (N) WHERE HAVE WE SEEN THIS BEFORE 9.8 BEFORE?

9 INERTIA examples Draw 9 examples of where inertia occurs in the real world Explain briefly how inertia occurs there, don’t just tell me the situation DO NOT use my examples Quality work, not grading on art but neatness and organization