Mathematics 9709 · AS & A Level · Energy, work and power

Energy, work and power — practice question

A particle with mass $0.6\text{ kg}$ is released from rest at a point $8\text{ m}$ above the ground. Just before it reaches the ground, its speed is $10\text{ m s}^{-1}$.
(main)[3]

Find the amount of work done against air resistance.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: Decrease in PE $= 0.6 \times 10 \times 8 = 48$ J

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