3 A ball is thrown from (0, 0). It just passes over a fence, k metres...

 

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3 A ball is thrown from (0, 0). It just passes over a fence, k metres from (0, 0) and hits the ground at (X, 0). A general model of its path is Hx(x-X) y = k(k-X) H is the height of the fence in metres. X is the horizontal distance, in metres, that the ball travels before hitting the ground. (a) (i) Using the information in question 1(a) show that this general model gives y=- 5 r+ x. 1 8 4 3 A ball is thrown from (0, 0). It just passes over a fence, k metres from (0, 0) and hits the ground at (X, 0). A general model of its path is Hx(x-X) y = k(k-X) H is the height of the fence in metres. X is the horizontal distance, in metres, that the ball travels before hitting the ground. (a) (i) Using the information in question 1(a) show that this general model gives y=- 5 r+ x. 1 8 4