FormulaSheet-SPH4U → → → → ∆dT = ∆d1 + ∆d2 + ∆dn → ∆d = v→∆t ∆t = − → → ∆d = df inal → ∆d v→avg → dinitial sin B b a = √b2 + c2 − 2bc · cos A → ∆d = v→f ∆t − v→f = √v→ v→i = → → → √v − 2a∆d n Km h n 1000m 3600s = − v→f v→i ∆t a→avg = ∆t = nm 3.6s = − v→f v→i a→ − a→∆t F F = μF F N Fc = v= mv 2 r √ → ∆d = rF c m r= mv 2 Fc m= rF C v2 1 km 1000 1 3600s → 2∆d ∆t − v→ v→f = → 2∆d ∆t − v→ a→ = i FF μF v2 r v = √ac r v2 ac sina A = → → 2 ∆d = v→i ∆t + 12 a∆t f FN = 3.6n Km s = v→i = v→i = r= n → 2∆d v→f + v→i ac = = v→f + v→i 2 ∆t ∆t = v→f = v→i + a→∆t v→i = v→f nm s ∆t = → ∆d ∆t − → 2∆d ∆t2 1→ 2 a∆t − −v→ ± √v→ i 2 i 2v→i ∆t → → + 2a∆d FF FN √ ∆t = → ∆d ∆t v→f ± Fc m4π2 r r= Fc m4π2 f 2 m= Fc 4π2 rf 2 1→ 2 2 a∆t → + 12 a∆t − → 2∆d 2 ∆t → 2vf ∆t →2 f → → ≈ m0 = 0 ac = 4π2 rf 2 f= √ r= ac 4π2 r ac 4π2 f 2 F → net → ∆d ∆t → → + 2a∆d 2 − v→f 2 v→i 2 → 2∆d − 2 2 v→f v→i → 2a → → → = F1 + F2 + Fn Fc = T = m4π2 r T2 √ m4π2 r Fc r= T 2F c m4π2 m= T 2F c 4π2 r sinθ cosθ initial v→T x = v→T × cos θ v→T y = v→T × sin θ θ = tan−1 v→T = → √v → ∆dx = T = v→T x v→T y ( ) 2 Tx + v→T y v→i 2 a sin2θ ac = − v→ ∆v→ = v→f inal tanθ = f → ∆d = a 2 i a→ = √v→ − 2a∆d → F net = ma→ F c = m4π2 rf 2 f= a→ = a μF = v→f = v→ = 4π2 r T2 √ r= 2 4π2 r ac ac T 2 4π2 FirstLaw:Iftheexternalnetforceonanobjectiszero,theobjectwillremainatrestorcontinuetomoveataconstantvelocity. SecondLaw:Ifthenetexternalforceonanobjectisnotzero,theobjectwillaccelerateinthedirectionofthenetforce.Themagnitudeof theaccelerationisdirectlyproportionaltothemagnitudeofthenetforceandinverselyproportionaltotheobject’smass. ThirdLaw:Foreveryactionforce,thereexistsasimultaneousreactionforcethatisequalinmagnitudebutoppositeindirection.