Question

Missy diwater, the former platform diver for the ringing brothers' circus had a kinetic energy of 15,000J just prior to hitting the bucket of water if missy's mass is 50kg what was her velocity

Answer 1

KINETIC ENERGY

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Solve:

$\: : \implies \sf \large KE= \frac{1}{2} m {v}^{2}$

$\large \tt \red{given} \begin{cases} \sf \: KE=15000 \\ \sf \: m = 50 \end{cases}$

Substitute the given:

$\implies \sf \large 15000= \frac{1}{2} (50) {v}^{2}$

$\implies \sf \large 15000= 25 {v}^{2}$

$\implies \sf \large \frac{15000}{25} = \frac{ \cancel{25} {v}^{2} }{ \cancel{25}}$

$\implies \sf \large600 = {v}^{2}$

$\implies \sf \large \sqrt{600} = \sqrt{ {v}^{2} }$

$\implies \sf \large10 \sqrt{6} = v$

$\implies \sf \large10( \sim2.45) = v$

$\implies \sf \large \sim24.5 = v$

$\implies \sf \large v \approx 24.5$

Final Answer:

$\tt \huge \purple{Approx \: 24.5\,m/s}$

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