Physics

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From your vantage point on the roof of your 6.5 m tall apartment building you are launching water balloons over the 3.5 m wall at the back of your complex. The large singlshot is launching the balloons horizontally such that they just barely clear the wall 12m away. (a) How long does it take the balloon to reach the top of the wall? (b) What is the initial speed of the balloon? (c) What is the speed of the balloon as it clears the wall?

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