lecture04_Jan21

# lecture04_Jan21 - Todays Agenda Projectile Motion Today...

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Page Today Today ’s Agenda: s Agenda: Projectile Motion Projectile Motion z Click Click here here for projectile motion for projectile motion Projectile Motion Projectile Motion Horizontal and vertical motions are independent Analyze separately ! z Projectile Motion : 2-D problem with constant acceleration g Í Choose y axis vertical (direction of acceleration g) Í Choose x axis horizontal (direction of zero acceleration) What’s in common between the horizontal and vertical motions? Time !

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Projectile Motion Projectile Motion vertical motion Free Fall y = y o + v oy t - ½g t 2 v y = v oy -gt horizontal motion Constant Velocity x= x o + v ox t Initial velocity v ox = v o cos θ v oy = v o sin θ v v x v y v o v 0x v 0y θ Projectile motion is parabolic. Example: A kickoff Example: A kickoff z A football on the ground is kicked at an angle of 37 degrees with a velocity of 20 m/s . Calculate Í The maximum height Í The ‘hang time’ Í How far away it hits the ground? Í
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## This note was uploaded on 09/26/2010 for the course PHYS 021 taught by Professor Dick during the Spring '08 term at GWU.

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lecture04_Jan21 - Todays Agenda Projectile Motion Today...

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