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Science Starter! Complete the FRONT PAGE (#s 1 – 9) of the worksheet “Motion Graphs” (on teacher’s desk). 1. Describe the motion depicted in this particle model. 2. Create a data chart and graph the motion shown. Distance (m) 0 0 1 2.5 2 7.5 3 17.5 4 32.5 5 55 Particle Model Graph 50 Distance (m) Time (s) 40 30 20 10 0 0 1 2 3 4 Time (s) 5 6 Acceleration Definition: The rate at which the velocity of an object changes (vector) Symbol: a Unit: m/s2 Reminder: velocity includes SPEED and DIRECTION Tangent Lines : Instantaneous Velocity Tangent Lines become steeper: speed is INCREASING Position moves away from zero: traveling in a POSITIVE direction Velocity vs. Time Graphs Qualitatively describe the motion of the object for each interval: a) 0s – 4 s b) 4s – 8s c) 8s – 12s Acceleration Enclosed Area Shade in shape and find area to find displacement. Rectangle = bh Triangle = ½ bh Displacement includes direction (+ or -); distance is a scalar total!