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CourseSummary - Course Summary Concepts to Understand 1...

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Course Summary: Concepts to Understand 2 2 1 0 0 0 0 v v gt t y y t x x y x + = + = 1) Projectile Motion x, y independent 2) Newton’s Laws total x x F a m 1 1 1 = Force diagrams with labeled axes 3) Energy Conservation (usually) friction friction i f f d W E E = = U K E + = v/R) KE l (rotationa I KE) onal (translati v m 2 2 1 2 2 1 = + = ω ω K earth) near (gravity y g m U = earth) from far (gravity r GMm U = (spring) x k 2 2 1 = U force - y net no if conserved v v force - net x no if conserved v v 2 2 1 1 2 2 1 1 y y x x m m m m + + 4) Collisions If momentum alone solves the problem, forget about energy. If conservation of kinetic energy is needed, must be elastic colllision. Remember total angular momentum conserved if no net torque on system.
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