anonymous
  • anonymous
a baseball is thrown from height of 2meters and caught at the same height 38meters away. During its parabolic path, it reaches a maximum height of 16meters. Find the equation in std form which relates the height of the ball to the horizontal distance that it has traveled.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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watchmath
  • watchmath
From the given information we know that \((0,2)\) is the \(y\)-intercpet. And also \((38,2)\) is another point on the parabola. The line of symmetry is in the midpint between \(x=0\) and \(x=38\). So the line \(x=19\) is the line of symmetry. Since the maximum height is 16 meters, then \((19,16)\) is the vertex. Hence in the vertex form the parabola is of the form \(y=a(x-19)^2+16\) Plugin \((0,2)\) we have \(2=19^2a+16\) \(a=-\frac{14}{361}\). Hence \(y=-\frac{14}{361}(x-19)^2+16\) \(y=-\frac{14}{361}x^2+\frac{28}{19}x+2\)

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