MYP Physics · 20 · free response
Battery-powered lift
Independent assessment practice · Original GioPhysics question with a detailed, mark-by-mark answer guide.
- Demand
- discriminating
- Marks
- 7
- Topics
- 1
- Answer
- Complete
Question7 marks
A motor lifts 6.0 kg through 2.5 m in 4.0 s while drawing 45 W electrical power. Use g = 9.8 N/kg to find useful power and efficiency.
Task interpretation
What a complete response should do
Develop a connected physics argument and support each claim with a relationship, calculation, or observation.
Make assumptions explicit, connect several ideas, and test whether the final result is physically reasonable.
- Response type
- free response
- Allocation
- 7 marks
- Demand
- discriminating
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