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Acceleration (1) notes
Acceleration (1) notes
Acceleration (1) notes
Acceleration (1) notes
Acceleration (1) notes
Acceleration (1) notes
Acceleration (1) notes
Acceleration (1) notes
Acceleration (1) notes
Acceleration (1) notes
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Acceleration (1) notes

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Transcript

  • 1.
    • When an object undergoes acceleration , its velocity changes.
    • Acceleration the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change.
    • Acceleration can be a change in speed or a change in direction .
  • 2.
    • When an object undergoes acceleration , its velocity changes.
    • Positive acceleration is in the same direction as the motion and increases velocity.
    • The basketball player
    • accelerates at 5 m/s/s
    • upward.
  • 3. Linear Acceleration
    • When an object slows down it is losing speed. This is called Negative Acceleration or Deceleration .
    • This is really acceleration in the backward direction.
  • 4.
    • Moving in a circle at constant speed is acceleration because you are constantly changing direction.
    • The acceleration that occurs in a circular motion is known as centripetal acceleration .
            • Stock cars are constantly accelerating around the
            • track.
  • 5.
    • Equation acceleration = final velocity – initial velocity
    • time
    • what does this mean?
    • Or a = v
    • t
    • Units of acceleration: m/s/s, m/s 2 , km/h/s, mi/hr/s
    • The average acceleration over a given time interval can be calculated by dividing the change in the object’s velocity by the time over which the change occurs.
  • 6.
    • Natalie accelerates her skateboard along a straight path from 0 m/s to 4.0 m/s in 2.5 s. Find her average acceleration
    • List what you know : Plug into your equation
    • Fina l velocity = 4.0 m/s a= V final - V initial / time
    • Initial velocity = 0 m/s 4.0 m/s – 0 m/s
    • Time = 2.5 s 2.5 s
    • Acceleration = ? A =
  • 7. Practice Calculating Acceleration
    • If Annie goes from 0m/s to 8 m/s in 1 sec. What is her acceleration?
    • Tanner ran 0m/s to 10m/s in 1 sec. What is his acceleration?
    • Sam’s new Mercedes goes from 0m/s to 30 m/s in 6 sec. What is its acceleration?
    • Catlin’s jet accelerates from a stop to 76 m/s in 10 sec. What is its acceleration?
  • 8. The top fuel cars are traveling 298.1 mph in 3.055 seconds, what is their acceleration?
  • 9.  
  • 10.
    • What is the acceleration at 3 seconds?
    • What is the acceleration at 8 seconds?

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