Information Sheet for Final Exam (Physics 101), Lecture notes of Physics

Download Information Sheet for Final Exam (Physics 101) and more Lecture notes Physics in PDF only on Docsity! Information Sheet for Final Exam (Physics 101) v = vo + at x = xo + vot + ½at 2 v 2 = vo 2 + 2a(x – xo) W = mg g = 9.8 m/s 2 fk = µkFN fs ≤ µsFN Newton’s 1st Law: Every object continues in its state of rest, or of constant speed in a straight line, until a nonzero net force acts on it. Newton’s 2nd Law: net F = ma Newton’s 3rd Law: When one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object. ************************************************************************* Definition of Work: work = (component of force in the direction of displacement)(displacement) Kinetic Energy: KE = ½mv2 Work-Energy Theorem Work done by all the forces = change in kinetic energy (W = ΔKE) Gravitational Potential Energy: GPE = mgy where y is change in vertical height Elastic Potential Energy: EPE = ½kx2 where x is the amount of compression Wnc + KE1 + PE1 = KE2 + PE2 where Wnc is work done by frictional forces KE1 + PE1 = KE2 + PE2 if there is no friction ************************************************************************* Definition of Impulse: impulse = F∆t = (force)(time) Definition of Momentum: momentum = (mass)(velocity) impulse = Δp impulse = change in momentum Inelastic collision: only momentum is conserved Elastic collision: momentum is conserved and kinetic energy is conserved Equation 6.14 from textbook: v1 – v2 = – (V1 – V2) (for elastic collisions) Centripetal acceleration ac =v2/r s = rθ v = rω atan = rα ω = ωo + αt θ = θo + ωot + ½αt2 ω2 = ωo 2 + 2α(θ – θo) m1m2 where r is center-to-center Newton’s Universal Law of Gravity: F = G  r 2 and G = 6.67 x 10−11 Nm2/kg2