You point a tennis-ball serving machine straight up and put a piece of plastic wrap across the
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You point a tennis-ball serving machine straight up and put a piece of plastic wrap across the top of the barrel, placing a \(10 \mathrm{~g}\) marble on top of the barrel. When a \(58 \mathrm{~g}\) tennis ball in the machine is fired, it sends the marble into the air. The marble rises \(200 \mathrm{~m}\) above the barrel mouth, and the tennis ball rises \(54 \mathrm{~m}\). Neglecting the plastic wrap, what is the ball's launch speed?
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Mehwish Aziz
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