danielaazamora15 danielaazamora15
  • 24-03-2020
  • Physics
contestada

A 0.350kg ball is dropped form a window what is the balls speed after the earth has done 15.0j of work on it

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opudodennis
opudodennis opudodennis
  • 01-04-2020

Answer:

9.26 m/s

Explanation:

Energy, in this case kinetic energy is expressed as [tex]KE=0.5mv^{2}[/tex] where m is mass and v is the velocity of the ball. Given that KE js given then making v the subject of the formula [tex]v=\sqrt {\frac {2KE}{m}}[/tex]

Substituting KE with 15 J and m with 0.35 kg then

[tex]v=\sqrt {\frac {2\times 15}{0.35}}=9.258200997725476 m/s\pprox 9.26 m/s[/tex]

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