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Lana71 [14]
2 years ago
5

If a ball has a mass of 5 kg and 100 J of KE, what is its velocity?

Physics
2 answers:
Yanka [14]2 years ago
8 0

{\fcolorbox{white}{lightgreen}{\bf{\textcircled{$\checkmark$}}{Verified\:answer}}}

  • Mass of ball=m=5kg
  • Kinetic energy=KE=100J
  • Velocity=v=?

We know

\boxed{\sf K.E=\dfrac{1}{2}mv^2}

\\ \sf\longmapsto 100J=\dfrac{1}{2}5\times v^2

\\ \sf\longmapsto v^2=100\times \dfrac{2}{5}

\\ \sf\longmapsto v^2=20(2)

\\ \sf\longmapsto v^2=40

\\ \sf\longmapsto v=\sqrt{40}

\\ \sf\longmapsto v=6.2m/s

Ksivusya [100]2 years ago
3 0

Answer:

6.2m/s

Explanation:

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Answer:

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Explanation:

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When performing a mathematical demonstration, it is found that the equations that define this movement are as follows.

Vf=Vo+a.t  (1)\\\\

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Where

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X = displacement

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for this problem

Vf=7.6m/s

t=1.07

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we can use the ecuation number one to find the acceleration

a=(Vf-Vo)/t

a=(7.6-0)/1.07=7.1m/s^2

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4 0
3 years ago
An object of mass 'm' is on an inclined plane with an
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Answer:

F_{\text{par}} = F_{\text{frict}}

F_{\text{norm}} = F_{\text{perp}}

Explanation:

See attachment for complete work.

Download pdf
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