test 1 last year - Name: _ P2601 (Spring 2010) Individual...

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Name: ________________________________ P2601 (Spring 2010) Individual Exam 1 Time flies like an arrow; fruit flies like a banana. --Groucho Marx Possibly Useful Formulas: 1 in=2.54 cm, 1kg~2.2 lb; 222 2c o s cab a bC =+− ; sin sin sin abc A BC == ; hyp 2 =opp 2 +adj 2 ; SOHCAHTOA; circle area= π r 2 , circumf=2 π r; sphere vol=4/3 π r 3 , area=4 π r 2 ; If ax 2 +bx+=0 , then 2 4 2 bba c x a −± = ; i ttt Δ= − ; f i x x v t = Δ ; f i vv a t = Δ ; x=x i + v Δ t; v=v i + a Δ t ; 0 lim inst t v a t Δ→ Δ = Δ ; 0 lim inst t x v t Δ = Δ For constant a: 2 i f v v v + = ; x x i =v i t+ 1 2 at 2 ; x x i =v f t 1 2 at 2 v x 2 =v xi 2 +2a x (x-x i ); 2sin θ cos θ =sin2 θ ; sin 2 θ +cos 2 θ =1 ; use g=10m/s 2 ; Projectiles: For θ measured from the +x axis: v x = v cos θ , v y = v sin θ , tan θ = v y / v x ; ( ) 0 cos x vt Δ= ; () 2 0 1 sin 2 yv t g t ; F D = ½ C D ρ Av 2 (gases) 2 22 0 tan cos g x yx v Δ Δ=Δ ;a centrip = v 2 /r= ω 2 r; T=1/f=2 π/ω ; Forces: Σ F =m a ; F AB = F BA , f k = μ k F N , f s s F N ; =tan θ max ; Atwood pulley system: 21 2 1 12 ; mm m m ag Tg ++ Remember that unless otherwise noted you must ALWAYS explain your reasoning clearly. Even if the final result is correct, you will lose points for incoherent answers. _______________________________ I. (7 pts each) For the multiple choice only : No explanation is needed if your answer is correct. Justify your answer with well chosen words or a formula and you may receive partial credit even for a wrong answer---but use your time wisely. 1. ___ The position of an object at equal time intervals is shown below: Which graph below correctly represents position versus time for this object?
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This note was uploaded on 07/23/2011 for the course PHYS 2601 taught by Professor Andrews during the Summer '10 term at Youngstown State University.

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test 1 last year - Name: _ P2601 (Spring 2010) Individual...

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