Theory of Intelligence
11TH•Physics•Work Energy And Power•Question 6

Solution

If an object of mass $2\,\mathrm{kg}$ thrown up from ground reaches a height of $5\,\mathrm{m}$ and falls back to the Earth (neglecting air resistance), calculate:

Solution

  • Part (i): −98 J-98\,\mathrm{J}
  • Part (ii): +98 J+98\,\mathrm{J}
  • Part (iii): 0 J0\,\mathrm{J} — work done in a closed path in a conservative field is zero

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