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final exam

# final exam - Nano 10-9 Micro 10-6 Milli 10-3 Centi 10-2...

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Nano 10 -9 Micro 10 -6 Milli 10 -3 Centi 10 -2 Kilo 10 3 Scalar – 1 number Vector – Magnitude and direction √i(x) 2 +j(y) 2 +k(z) 2 x=(.5*v f -v i ) ∆t v f 2 =v o 2 +2ax x=v o * ∆t+.5a(∆t 2 ) v f =v o +a∆t x=.5(v f +v o ) ∆t Catch up» t=(2(v prey ))/a predator T=v o sin(∂)(+/-)√v o 2 sin∂ 2 -2gx] / g ∂ btw net forces: ∂=tan -1 (R y / R x) F=ma W=mg T=m(g+a) Elevator F n= m(g+a) F k= µ k n n=mg g=>acceleration -- (.96g)(9.8m/s 2 )=9.4m/s 2 magnitude==m(g-(v 2 /R) Radius = (V 2 /a rad ) Centripetal acceleration(a rad )= (2π 2 R)/T 2 V=(2πR)/T T=2π[√(Lcosø)/g] Relative velocity – gap gets smaller = neg velocity Road curve: V max =[√µ s gR] Tanø = V 2 /(gR) W = FScosø W = mgh = PE Work = Newtons * Distance Work Friction = -µ k mgd Work Spring = (1/2Kx 2 ) KE = (1/2)mv 2 a = (∑F x )/m v 2 2 = V 1 2 + 2as weight = mg d = v[√m/k] K = F x /x V = [√2K/m] Power (watts) = thrust (force forward) * V P o = W/t Y = v 2 /2g ELASTIC: m A v A1x + m B v B1x = m A v A2x + m B v B2x INELASTIC: m A v A1x + m B v B1x = (m A + m B )v 2x s = rØ xØ = (x rad)(360º/2π) average angular velocity / acceleration = w av / a av w av = (∆ rad) / (∆t) a

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final exam - Nano 10-9 Micro 10-6 Milli 10-3 Centi 10-2...

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