Key Concepts: $W = Fd$, $P = W/t$, $GPE = mgh$, $KE = \tfrac{1}{2}mv^2$.
Section A: Work
1. A force of 40 N moves a box 5 m. Calculate work done. [2]
Section B: Power
2. A motor does 500 J of work in 25 s. Calculate power. [2]
Section C: Energy
3. A 2 kg object is lifted 3 m. Calculate GPE (use $g = 9.8\,N/kg$). [2]
4. A 3 kg object moves at $4\,m/s$. Calculate KE. [2]
Total marks: 8
Mark Scheme
1. $W = Fd = 40 \times 5 = 200\,J$ [2]
2. $P = W/t = 500/25 = 20\,W$ [2]
3. $GPE = mgh = 2 \times 9.8 \times 3 = 58.8\,J$ [2]
4. $KE = \tfrac{1}{2}mv^2 = 0.5 \times 3 \times 16 = 24\,J$ [2]