e2A_fall05a

e2A_fall05a - Exam 2A Phys 111 Section_ _ Fall 2006 Name_ A...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Exam 2A Phys 111 Section_____ _ Fall 2006 Name____________________________________________ A The exam is closed book and closed notes. Make sure you put your name on the SCANTRON form. Use pencil #2. Vectors: A x = A cos θ ; A y = A sin θ ; A = 2 y 2 x A A + ; θ = tan -1 x y A A ; A = A x î + A y ĵ A + B = C C x = A x + B x , C y = A y + B y ; y y x x B A B A cos | B || A | B A + = θ = ; One-dimensional motion : x = v avr t ; x = x 0 + v o t + 1 2 at 2 , a 2 v v x 2 0 2 - = ; v = v o + at; t 2 v v x 2 1 + = ; Free-fall: y =y 0 + v o t - 2 1 gt 2 , v = v o - gt, g 2 v v y 2 o 2 - - = ; g 2 v y 2 0 max = g 2 v t y 0 tot = Two-dimensional motion: r = r 0 + (v ox t + 1 2 a x t 2 ) î + (v oy t + 1 2 a y t 2 ) ĵ v = (v ox + a x t) î + (v oy + a y t) ĵ; Projectile motion : x = v ox t ; y = v 0y t - 1 2 gt 2 ; v y = v oy - gt; v ox = v o cos θ ; v oy = v o sin θ ; g 2 v v y 2 oy 2 y - - = ; Range = ; g 2 sin v 2 o θ 2 0 2 ) cos v ( 2 gx x ) (tan y θ - θ = g 2 v y 2 oy max = g 2 v 2 t oy tot = Circular motion: a c = R v 2 ; period T = v R 2 π ; Dynamic: F net = ma; F netx = ma x ; F nety = ma y ; |F g | = mg, ; g = 9.8 m/s 2 ; F net = r mv 2 ; Incline: F gx (along an incline) = mgsinθ F gy (perpendicular to an incline) = mgcosθ work: W = F d = Fdcos φ ; W mg = mg(y 0 - y) , F spring = -kx ; W spring = 1 / 2 k(x 0 2 -x 2 ) W fr = -F k d; F k = μ k N; W tot = K f - K i ; P avg = t W P = F Kinetic energy:
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/30/2012 for the course PHYS 111 taught by Professor Moro during the Spring '08 term at NJIT.

Page1 / 4

e2A_fall05a - Exam 2A Phys 111 Section_ _ Fall 2006 Name_ A...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online