Bell Ringer 29 June 2009. LT: Describe how acceleration over a period of time affects the velocity of an object. Discuss with your team which forces applied.

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Presentation transcript:

Bell Ringer 29 June 2009

LT: Describe how acceleration over a period of time affects the velocity of an object. Discuss with your team which forces applied to a race car are responsible for its constantly changing state of motion around a circular track.

Terms associated with motion Position Time Distance Speed Velocity Acceleration Force Mass

Definitions Position = location at a given time Distance = change in position ( e.g., 2 m ) Speed = (change in position)/time ( 4 m/s ) Velocity = speed & direction ( +3m/s, -5m/s ) Acceleration = (change of velocity)/time –change in speed implies acceleration –change in direction implies acceleration

Putting it all together Acceleration ramp (acceleration, time 1 ) Constant velocity plane (distance, time 2 ) What is relationship between the acceleration and time 1 on ramp and the velocity on the horizontal plane?