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Answered

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a ball of mass 0.5k has 100 Joules of kinetic energy what is speed of the ball​ full solution please

Sagot :

here's the solution : -

we know, kinetic energy (k.e) =

[tex] \dfrac{1}{2} mv { }^{2} [/tex]

where,

  • m = mass
  • v = velocity

So,

=》

[tex]100 = \dfrac{1}{2} \times 0.5 \times {v}^{2} [/tex]

=》

[tex] \dfrac{100 \times 2}{0.5} = {v}^{2} [/tex]

=》

[tex] \dfrac{2000}{5} = {v}^{2} [/tex]

=》

[tex]400 = {v}^{2} [/tex]

=》

[tex]v = \sqrt{400} [/tex]

=》

[tex]v = 20\: \: ms {}^{ - 1} [/tex]

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