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An object moves 1.00 m in a straight -li...

An object moves 1.00 m in a straight -line displacement `veca,` changes direction, moves another `1.00` m in straight-line displacement` vecb,` and then ends up `1.0m` from the starting point. (a) Through what angle did it turn ? (b) What is the magnitude of `veca + vecb` ?

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`(a) 120^(@), (b) 1.73m`
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