A shopper pushing a cart through a store moves 40.0 m down one aisle, then makes a 90.0 turn and moves 15.0 m. He then makes another 90.0 turn and moves 20.0 m. (a) How far is the shopper away from his original position? (b) What angle does his total displacement make with his original direction? Notice that we have not specified whether the shopper turned right or left. Explain how many answers are possible for parts (a) and (b) and give the possible answers.
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