Forms and Transformations of Energy — O/L Science

How do I practise Forms and Transformations of Energy?

1 question with a worked solution · 5 marks

1. 2019 · Paper II · 5 marks
   Question 6 holds a ball of stated mass at rest at a stated height, with g supplied. It asks you to calculate the ball's gravitational potential energy, then its kinetic energy just before it lands with air resistance ignored, and to name the energy transformation that happens as it falls.
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   (i) GPE = mgh = 2 × 10 × 5 = 100 J (ii) By conservation of energy, KE = GPE = 100 J (no energy lost to friction). (iii) Gravitational potential energy → Kinetic energy.
   Source: Department of Examinations, Sri Lanka — G.C.E. O/L Science 2019, Paper II, Question 6 · https://doenets.lk/pastpapers

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