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two siblings leave school and walk home. the sister follows the sidewalk and travels 3 km...

two siblings leave school and walk home. the sister follows the sidewalk and travels 3 km east then 4 km north. the brother goes straight from school to home without following the sidewalk. it takes the sister twice as long to get home as her brother. which of the following statements is true?

a. the sister has a greater velocity than the brother

b. the siblings have the same velocity

c. the brother has a greater velocity than the sister

c. the brother has greater velocity than the sister

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