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Unformatted text preview: y-direction a x = g a y-= o o xo cos v v = o o yo sin v v = xo x v v = (constant!) gt sin v v o o y- = t ) cos v ( x x o o o + = 2 o o o gt t ) sin v ( y y 2 1- + = Trajectory: 2 o 2 2 o o x cos v 2 g x ) (tan y - = Max. Height: g 2 sin v h 2 2 o = Range: g 2 sin v R o 2 o = f o E E = Conservation of Energy f f o o ) KE ( ) PE ( W ) KE ( ) PE ( + = + + d F W = [Work = (Force) (distance)] (unit is J, Joule) Force and distance are vectors and their dot product gives the scalar Work. So, use only the component of the Force that is in the direction of the movement. d ) cos F ( W = KE(linear) = 2 v m 2 1 o f ) KE ( ) KE ( KE W-= = t W P = [Power = (work)/(time)] (unit is W, Watt) v ) cos F ( v F P = = Spring (with spring constant k): kx F-= 2 x k 2 1 PE = PE or U (Potential Energy) of gravity: h g m U = 2...
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This note was uploaded on 05/29/2011 for the course PHY 2020 taught by Professor Staff during the Spring '08 term at University of Florida.
- Spring '08