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1 1 Vectors Definitions vector addition scalar multiplication indent subtraction magnitude unit vector i and j Examples Find the components of the vector which begins at the point 5 2 and ends at the point 1 3 Then find a unit vector parallel to this vector Given a 5 2 and b 2i 4j find each of the following a b a b 2a 3a 4b Two people are to pull ropes attached to a 50kg box on a frictionless surface as shown in the figure given in class With what force does each person have to pull in order to have the box accelerate straight ahead at 0 5 meters per second squared On Your Own 1 3 5 9 15 17 23 27 30
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