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Mathematics 7 Online
OpenStudy (anonymous):

Which equation would best help solve the following problem? Martina hits a volleyball ball upward with an initial velocity of 13 meters/sec. When she hits the ball, it is one meter above the ground. How long will it take the ball to hit the ground? A. –4.9t2 + 13t + 1 = 0 B. –4.9t2 + 13t = 1 C. 4.9t2 + 13t + 1 = 0 D. –16t2+ 13t + 1 = 0

OpenStudy (anonymous):

can you tell me whats the vertical displacement

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