February/March 2026 Paper 12

2026 · 40 questions · 40 parts · 40 marks

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19Energy Work Power EfficiencyMedium1 mark
When the speed of an object is increased from 10 m s to 20 m s, its kinetic energy increases by E. What is the increase in the kinetic energy of the object when its speed increases from 70 m s to 80 m s?