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Please answer these questions: 1) A man stands on the edge of the roof of a...

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Physics

Please answer these questions:

1) A man stands on the edge of the roof of a 15.0-m tallbuilding and throws a rock with a speed of 30.0 m/s at an angle of33.3⁰ above the horizontal. Ignore air resistance. Calculate: thetotal time that the rock spends in the air?

2) A ball is thrown upward at an unknown angle with an initialspeed of 20.0 m/s from the edge of a 45.0-m-high cliff. At theinstant the ball is thrown, a woman starts running away from thebase of the cliff with a constant speed of 6.00 m/s. The woman runsin a straight line on level ground, and air resistance acting onthe ball can be ignored. At what angle above the horizontal shouldthe ball be thrown so that the runner catches it just before ithits the ground, and how far does the woman run before she catchesthe ball?

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