Question

A boy can throw a stone up to a maximum height of 10m. The maximum horizontal distance that the boy
can throw the same stone up to will be

Moderate

Solution

$H_{\max} = \frac{u^{2}}{2 g} = 10$ $(∵ θ = 90 °)$
$\Rightarrow u^{2} = 200 \Rightarrow R_{\max} = \frac{u^{2}}{g} = 20 m$

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