1. Two Dimensional Motion we will now analyze motion in the horizontal plane which (like all planes) is two dimensional we will first use vector diagrams to answer questions and follow that up with answering questions mathematically

2. Vector Quantity any quantity that is described by a number, a unit, and a direction common vector quantities are displacement, velocity, acceleration, and force Quick review of vector diagrams: 1.select a scale (relationship between vector and quantity) and directional compass. 2.draw a reference origin. 3.draw a line segment of appropriate length and direction 4.draw the arrowhead at the tip 5.label the vector N 1 cm = 100 m 1.3 Prac. #1

3. Adding Vectors draw vectors to scale in the appropriate direction, connecting them tip to tail. draw the resultant vector from the tail of the first vector, to the tip of the second vector measure the length of the resultant vector and use the scale to determine the magnitude of the vector use a protractor to determine the direction of the vector label the vector ALWAYS ADD THE NEXT VECTOR WHERE THE PREVIOUS VECTOR FINISHED

4. Resultant Displacement displacement is the change in position of an object resultant displacement (  d R ) is the vector sum of the individual displacements (  d 1 +  d 2 +  d 3 + …) 1.Andrew rides his bike 3.0 km [W] and then heads goes 7.0 km [S]. Calculate his resultant displacement. N 1 cm = 1 km

5. 2.John rides his skateboard 3.0 km [W], then heads 5.0 km [S] and finally turns 6.0 km [E]. Calculate his resultant displacement. N 1 cm = 1 km 1.3 Prac. #2,3