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Acceleration
 

Acceleration

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    Acceleration Acceleration Presentation Transcript

    • Direction of acceleration due to gravity vectors
      • *
      Acceleration due to gravity is a vector quantity.
      • Vectors can be represented by an arrow to show magnitude and direction
      • On your whiteboards, draw the direction of acceleration for the following objects.
      • The dashed line represents its path.
      • * not drawn to scale
    • #1. A pebble dropped from a bridge
      • *
      Answer
    • #1. A pebble dropped from a bridge
      • *
      The vector is oriented down.
    • #2. A baseball tossed up in the air, halfway up the path
      • *
      Answer
    • #2. A baseball tossed up in the air, halfway up the path
      • *
      The vector is oriented down.
    • #3. A baseball tossed up in the air, at the top
      • *
      Answer
    • #3. A baseball tossed up in the air, at the top
      • *
      The vector is oriented down.
    • #4. A baseball tossed up in the air, right before it strikes the ground
      • *
      Answer
    • #4. A baseball tossed up in the air, right before it strikes the ground
      • *
      The vector is oriented down.
    • #5. A football is thrown at a 45 0 angle, at the top of its path
      • *
      Answer
    • #5. A football is thrown at a 45 0 angle, at the top of its path
      • *
      The vector is oriented down.
    • #6. A cannonball rolling off a table
      • *
      Answer
    • #6. A cannonball rolling off a table
      • *
      The vector is oriented down.
      • What can you summarize about the direction of the vector representing acceleration of all these objects?
      • What are other examples?
      • The rock pebble football and all have different masses. How does this affect the magnitude of the acceleration vectors?
      • On Earth, what would its magnitude be?