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physics. HELP

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An athlete executing a long jump, leaves the ground at a 30 degree angle with the ground and travels 8.90 meters horizontally in 1.1 seconds. What was the takeoff speed of the athlete along the diagonal?

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    See previous post: Mon,12-16-13,7:11 PM.

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    A 2.78 kg ball is attached to a ceiling by a 2.8 m long string. The height of the room is 5.1 m What is the gravitational potential energy

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    Np

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