Question

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Correct answers accepted!!

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Answer 1

Hope the above solution helps :)

Answer 2

Explanation:

$\huge\ \: ANSWER$

• Note:

For range,

displacement in (y) = 0

$y = 10x \: - \frac{4}{7} {x}^{2}$

Since displacement in y is zero....

$10x - \frac{4}{7} {x}^{2} = 0 \\ 70x - 4 {x}^{2} = 0 \\ x(70 - 4x) = 0 \\ x = 0 \: \: \\ this \: is \: not \: acceptable... \\ 4x = 70 \\ 2x = 35 \\ x = 17.5$