(a) A sports scientist is looking at ways to throw a heavy object further. The diagram below looks at two throws and models them on the parabola. ● . The first throw starts at O, it reaches its maximum height at H and lands at M. The second throw starts at O, reaches its maximum height at point A and then lands at N. A(4; 2) M N If the second throw is two metres further than the first throw, then what are th point H2

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