Constant Acceleration. What is average acceleration? The average acceleration over a period of time is just that…an average. – What limitations does it.

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Presentation transcript:

Constant Acceleration

What is average acceleration? The average acceleration over a period of time is just that…an average. – What limitations does it present? – What about you getting on the free-way? You press your foot on the gas peddle and are constantly accelerating over a period of time.

Constant Acceleration equations V f = V i + at ΔX = V i t + ½(at 2 ) V f 2 = V i 2 + 2a Δ X ΔX = ½ (V i + V f )t

Practice Problems What is a runner’s velocity at the end of a 100 m dash if he continually accelerates at m/s 2 ?

Practice Problem A passenger jet lands on a runway with a velocity of 71.5 m/s. Once it touches down, it accelerates at a constant rate of m/s 2. How far does the plane travel down the runway before its velocity is decreased to 2 m/s, its taxi speed to the landing gate?

Independent Practice In teams, work through the practice problems given to you. What you do not finish in class then becomes homework. Make sure to update your glossary with vocab!