20-23 年 IG 物理较难真题汇总_Motion, forces and energy 1.Physical quantities & measurement techniques 2. Motion (m22_22) (m21_22) (m21_22) (m20_22) (w20_21) (w20_22) 3. Mass & weight (s22_22) 4. Density 5. Forces (s22_23) (w21_21) (w21_22) (m20_22) (w20_21) 6. Momentum (m22_22) (s22_23) (s22_21) (w20_23) 7. Energy, work & power (s22_22) (s21_23) 8. Pressure (w21_23) (m20_22) (w20_21)