Newton's Laws of Motion Force and interactons 4 Forces are strength and direction (magnitude/direction) F Push pull Direct forces Contact fores 4 Normal forces E perpendicular to the Surface 's Frictional Forces ↳ inter actions between two surfaces ↳ Opposite of the applied force or motion. 4 Tension forces 4 puls Non contact forces Gravitional For ce 4 forces between an doject and its environment Fundamental forces gravity, Electromagnetic, Strong, Superposition of forces is total force is vector sum of all forces acting on a body Newton's First law of motion ↳ An object at rest will remain at rest, while an object in motion will remain in motion unless acted on by an external fore Newton's second law of motionion directly proportional to the net force applied and inversely proportional to its mass 's the harder something is hit, the faster it will go and in the direction it was hit F=ma units forces SI Newton [N] = (kg) (m/s²) Cas dyne [dyne] = [g) (m/s²) english paind [16] = [slug] (ft/s²) Mass and weight Mass is the amount of Stutt an object is Made of 4 kg, grams, slug 4 Weight is direction of the pull is always towards center of the gravitating object Newton's third law of motion For every action there is an oppositu and equal reaction. if you hit an object, it you will smack back with an equal force but in the opposite direction Earth e magnitude same in direction opposite in F 2 onz 2 on 1 212 212 Two forces can not act on an object One nas to be eliminate. Free Body Diagrams Arrows shows for cas direction Mangitude w/ approx یا Simple trig relations to resolve vectors into componems

Chapter 4: Newtons Laws of Motion

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