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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