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EK Physics 1

Translational motion

QuestionAnswer
for constant acceleration, distance = x = x0 + v0*t + 1/2*a*t^2
for constant acceleration, velocity = v = v0 + a*t
for constant acceleration, velocity^2 = v^2 = v0^2 + 2*a*x
average velocity = vavg = 1/2*(v+v0)
x vs. t graph slope = instantaneous velocity straight line = constant velocity curved line = changing velocity (acceleration)
v vs. t graph slope = instantaneous acceleration straight line = constant acceleration curved line = changing acceleration area beneath the curve = total displacement
projectile motion body projected by external force and continuing in motion by its own inertia
peak height of projectile found by.. v0*sin(theta) = sqrt(2*g*h)
what dictates time of flight for projectile? vertical velocity only
air resistance created when projectile collides with air molecules; increased with large surface area, smooth surfaces experience less, generally higher v means higher air resistance
Created by: miniangel918 on 2010-10-11



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