PhysicsCh2

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Author:
victimsofadown
ID:
203500
Filename:
PhysicsCh2
Updated:
2013-02-26 04:43:15
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PhysicsCh2
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PhysicsCh2
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  1. Equation for Average Velocity
    <V> = ΔX/Δt
  2. Difference between speed and velocity
    • Velocity is a vector; it has a magnitude and direction
    • Speed is does not have a direction
    • Velocity is a measureĀ of displacement/time
    • Speed is a measure of distance/time
  3. Equation for acceleration
    • a = ΔV/Δt
    • *must be instantaneous velocity
    • *constant velocity means zero acceleration
  4. Relationship between position, velocity, and time for one-dimentional motion
    • x = x0+v0t+1/2at2
    • v2-v02 = 2aΔx
    • v = v0+at
  5. Define acceleration, velocity, and deceleration
    • Acceleration: How quickly the velocity changes
    • Velocity: How quickly the position changes (net)
    • Deceleration: Acceleration is in the opposite direction of velocity
  6. If you throw a ball straight into the air...
    How does acceleration apply?
    How does velocity apply?
    • Acceleration is g at EVERY POINT in the throw, even at the top.
    • Velocity is equivalent at the same point (y) during the throw, but will have the opposite direction (opposite sign)
    • Velocity at the top will be 0

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