SOLUTION: A tennis player hits a ball with an initial vertical velocity of 63 feet per second. Can you find the number of seconds the tennis ball is I the air? Explain why not or find the nu

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: A tennis player hits a ball with an initial vertical velocity of 63 feet per second. Can you find the number of seconds the tennis ball is I the air? Explain why not or find the nu      Log On


   



Question 1014453: A tennis player hits a ball with an initial vertical velocity of 63 feet per second. Can you find the number of seconds the tennis ball is I the air? Explain why not or find the number of seconds.
Initial velocity formula: -16t^2+vt+s
where t is the time (in seconds) the object has been in the air, v is the initial vertical velocity (in feet per second), and s is the initial height (in feet)

Answer by Alan3354(69443) About Me  (Show Source):
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A tennis player hits a ball with an initial vertical velocity of 63 feet per second. Can you find the number of seconds the tennis ball is I the air? Explain why not or find the number of seconds.
Initial velocity formula: -16t^2+vt+s
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h(t) = -16t^2 + 63t + s
s is not given.
If you know s, then find t for -16t^2 + 63t + s = 0