Criado por gbridgland
mais de 10 anos atrás
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Questão | Responda |
Air resistance Definition | "A frictional force that opposes motion (producing a deceleration) due to an object moving through air particles |
Projectile Motion Definition | "a motion that can be separated into a two component motion, a horizontal component travelling at constant velocity and a vertical component travelling at constant acceleration forming a parabolic path" |
Constant Velocity in horizontal | no ΔV horizontal >no a horizontal >F=0 a=(∆V )/t F=ma a∝ ∆V F∝ a To show constant velocity reverse above sequence, from no F horizontal (ignoring air resistance) |
Vertical velocity component | changing vertical velocity due to different lengths of vertical vectors on diagram ∴ ∆V (∆Vi = Vf - Vi) ∴ > a (a=(∆V )/t) a∝ ∆V ∴ >F (F=ma) F∝ a As F vertical (F due to gravity) > a > ∆V ∴ changing velocity |
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