Distance V Displacement DISTANCE: The length of a path between two points DISPLACEMENT: Direction from a starting point and the length of a straight line.

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Presentation transcript:

Distance V Displacement DISTANCE: The length of a path between two points DISPLACEMENT: Direction from a starting point and the length of a straight line from the starting point to the ending point.

Displacement

What is distance, displacement?

Displacement

A.Add the magnitudes of two displacement vectors that have the same direction. B.Two displacement vectors with opposite directions are subtracted from each other. Combining Displacements

STARTFINISH

#6, 11.2 Speed and Velocity V = Total Distance/Total Time V = (1.5 km km) / (25 min + 5 min) V = 2 km / 30 min V = 2 km /.5 h V= 4 km/h

Average Speed # 11 (130) Average Speed = Total Distance / Total Time A: 200 / 4 = 50 m/s B: 100 / 10 = 10 m/s

Velocity Velocity change may be the result of a change in speed, direction, or both. If a boat is moving at a constant speed and changes direction, although the speed has not changed the velocity has changed because it changed direction.

Acceleration 5, 131: Each second an object is in a free fall, its velocity increases by 9.8 m/s 4 X 9.8 = 39.2 m/s

Acceleration Acceleration = Change in Velocity (vf-vi) / Total Time (t) 10 (132) 4 – 1 / 3 = 1 m/s

Acceleration 15 (132) Acceleration = (vf –vi) / t (0 m/s – 5 m/s) / 10 s -5 / 10 = -0.5 m/s

Newton’s Laws ere/Newton/law1.html ere/Newton/law1.html