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A block slides up a frictionless, incined plane set at an angle of 25 degrees.
a) If the block reaches a maximum height on the incline of h = 4.5 m., what was the initial speed of the block?
b) Now consider a second inclined plane with the same tilt angle for which the coefficient of kinetic friction between the block and the plane is muk = 0.15. What initial speed now is required for the block to reach the same maximum height?
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While on a vacation to Kenya, you visit the port city of Mombassa on the Indian Ocean. Calculate the muzzle velocity necessary to hit a pirate ship 300 meters from the base of the fort
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