Download Presentation
## Kinetic Energy: Motion

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -

**Position**Distance Displacement Speed Velocity Vector Scalar Important Vocabulary**Distance:**The total length of travel from beginning to end. Displacement: The change in position. Distance and Displacement**Jay-Z walks 5 kilometers east to Beyonce. Then he walks 6**kilometers west. Calculate the total distance Jay-Z walks and the total displacement Jay-Z walks from Beyonce. Distance and Displacement (5K) (6K)**Speed:**The distance divided by the time. Speed is never negative(-). Velocity: The displacement divided by the time. Displacement can be positive, negative or zero (+, -, 0). Speed and Velocity**Has only magnitude (Number or amount)**• Examples include: • Time • Mass • Distance • Speed Scalar**Has both magnitude and direction**• Examples include: • Displacement • Velocity • Acceleration vector**The rate at which the velocity changes with time**• a = Vf-Vi t acceleration**A flowerpot falls off a second-story windowsill. The**flowerpot starts from rest and hits the sidewalk 1.5s later with a velocity of 14.7m/s. Find the average acceleration of the flowerpot. Given: t=1.5s, Vi= 0m/s down, Vf=14.7m/s down Acceleration = (14.7-0)0/1.5 = 9.8 Acceleration Example