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  1. Unstretched spring length = 40 - 20 = 20 cm stretched spring length = √((90 - 10)² + (70 - 40)²) = 85.44 cm ...

    2 Answers · Science & Mathematics · 03/12/2020

  2. ... by gravity. h = v²/2g = 3.44²/2•9.8 = 0.603 m or 60.3 cm alternative as suggested by question PE = KE mgh = ...

    1 Answers · Science & Mathematics · 03/12/2020

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