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” …