Rules of Projectile Motion The x- and y-directions of motion can be treated independently The x- and...
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Transcript of Rules of Projectile Motion The x- and y-directions of motion can be treated independently The x- and...
Rules of Projectile MotionRules of Projectile Motion
The x- and y-directions of motion The x- and y-directions of motion can be treated independentlycan be treated independently
The x-direction is uniform motionThe x-direction is uniform motion aaxx = 0 = 0
The y-direction is free fallThe y-direction is free fall aayy = -g = -g
The initial velocity can be broken The initial velocity can be broken down into its x- and y-componentsdown into its x- and y-components
Some Variations of Some Variations of Projectile MotionProjectile Motion
An object may be An object may be fired horizontallyfired horizontally
The initial velocity The initial velocity is all in the x-is all in the x-directiondirection vvoo = v = vxx and v and vyy = 0 = 0
All the general All the general rules of projectile rules of projectile motion applymotion apply
Non-Symmetrical Non-Symmetrical Projectile MotionProjectile Motion
Follow the Follow the general rules for general rules for projectile motionprojectile motion
Break the y-Break the y-direction into direction into partsparts up and downup and down symmetrical back symmetrical back
to initial height to initial height and then the rest and then the rest of the heightof the height
Solving Relative Velocity Solving Relative Velocity ProblemsProblems
The pattern of subscripts can be The pattern of subscripts can be useful in solving relative velocity useful in solving relative velocity problemsproblems
Write an equation for the velocity Write an equation for the velocity of interest in terms of the of interest in terms of the velocities you know, matching the velocities you know, matching the pattern of subscriptspattern of subscripts
bcabac vvv