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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?​
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41 votes
41 votes
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?​

User Wolen
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1 Answer

17 votes
17 votes
  • mass=m=0.5kg
  • velocity=4m/s


\\ \sf\longmapsto KE=(1)/(2)mv^2


\\ \sf\longmapsto KE=(1)/(2)(0.5)(4)^2


\\ \sf\longmapsto KE=0.25(16)


\\ \sf\longmapsto KE=4J

User Tamas Szoke
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3.1k points
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