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A diver springs upward with an initial speed of 1.7 m/s from a 3.0-mboard.
a) Find the velocity with which he strikes thewater. [Hint: When the diver reaches the water, his displacement isy = -3.0 m (measured from the board), assuming that thedownward direction is chosen as the negative direction.]
b) What is the highest point he reaches above the water?
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Assuming that the ball's initial velocity was 45° above the horizontal and neglecting air resistance, what does the initialspeed of the ball need to be to produce such a home run if the ballis hit at a point 1.0 m(3.3 ft) above ground level? Assum..
A farsighted woman breaks her current eyeglasses and is using an old pair whose refractive power is 1.734 diopters. How far is her near point from her eyes
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