Question

balls thrown vertically upward maximum height of it is 198 metres find its initial velocity

Answer 1

hope it helps uh..
mark as brainliest nd follow mee☺☺

Answer 2

$\blue{\bold{\underline{\underline{Answer:}}}}$

$\green{\therefore{\text{Initial\:velocity=62.92\:m/s}}}$

$\orange{\bold{\underline{\underline{Step-by-step\:explanation:}}}}$

$\green{ \underline \bold{Given : }} \\ : \implies \text{Height(s) = 198 \: m} \\ \\: \implies \text{Acceleration(a) = - 10 \: {m}/s}^{2} \\ \\ : \implies \text{Final \: velocity(v) = 0 \: m/s} \\ \\ \red{ \underline \bold{to \: find : }} \\ : \implies \text{Initial \: velocity = ?}$

• According to given question :

$\bold{Using \: third \: equation \: of \: motion} \\ : \implies {v}^{2} = {u}^{2} + 2as \\ \\ : \implies 0 = {u}^{2} + 2( - 10) \times 198 \\ \\ : \implies {u}^{2} = 3960 \\ \\ : \implies {u} = \sqrt{3960} \\ \\ \green{: \implies \text{{u} = 62.92 \: ms}} \\ \\ \green{\therefore \text{Initial \: velocity \: of \: ball \: is \: 62.92 \: m/s}}$