Acceleration ppt by Vk1cR7

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									Acceleration
   The concepts of this lesson will allow
                 you to:

• Explain the terms that are associated with motion and
acceleration.


• Analyze acceleration problems and how to solve them.


• Identify formulas to calculate acceleration of an object.
             Acceleration Terms
             Discuss and Reviews
• Velocity               • Initial velocity


• Constant or uniform    • Instantaneous acceleration
Acceleration


• Average acceleration   • Final velocity
             What is Acceleration?
            How do you calculate it?
Acceleration is the change in velocity. Acceleration can be
positive or negative. Negative acceleration is called
deceleration.
    Acceleration can be calculated by taking the change
    in velocity over the change in time.


                        v2  v1        v
                  a                 
                         t t
                           2     1
                                       t
                   Acceleration Example
  If your BattleBot starts from rest and travels up to 1 m/s in 4
  seconds, what is your BattleBot’s acceleration?


  v1 = 0 m/s
  v2 = 1 m/s
  t1 = 0 s           a v v
                          2   1
                                  
                                      v
                                            a
                                                 1 0
                                                           0.25 m/s2
  t2 = 4 s              t t
                          2   1
                                      t         40

  a=?

Define the known      Use the right        Substitute in    Solution
 and unknowns           formula            known values

        The BattleBot’s velocity changed 0.25 m/s
        every second within the time interval
                    Kinematics Equations
Kinematics is a branch of physics that studies motion. With these equations
and what we now know about distance, time, velocity and acceleration we
can calculate any of these if unknown. Notice on the right side the variable
that is not in the equation to the left. This helps in determining the right
equation.

    V f  Vi  a t                                          d

            Vi  V f                                         a
    d                t
               2
    d  Vi t  1 2 at 2                                    Vf

    d  V f t  12 at 2                                    Vi

    V f  Vi  2ad
        2       2
                                                              t
Review and Questions

								
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