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History 7 Online
OpenStudy (anonymous):

A spear is thrown with an atlatl (a spear throwing tool) from a kayak near the water's surface with an initial velocity of 208 feet per second. Assume the starting height of the spear is 0 feet. How long will it take the spear to hit the water's surface? 13 secs 21 secs 42 secs 6 secs

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