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a student pushes a 0.500 kg trolley along a frictionless surface and accelerates it from rest to 4m/s. how much kinetic energy does the trolly gain?​

Sagot :

  • mass=m=0.5kg
  • velocity=4m/s

[tex]\\ \sf\longmapsto KE=\dfrac{1}{2}mv^2[/tex]

[tex]\\ \sf\longmapsto KE=\dfrac{1}{2}(0.5)(4)^2[/tex]

[tex]\\ \sf\longmapsto KE=0.25(16)[/tex]

[tex]\\ \sf\longmapsto KE=4J[/tex]

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