AP Physics 1 Question 23: Answer and Explanation
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3. If L, M, and T denote the dimensions of length, mass, and time, respectively, what are the dimensions of power?
- A. L2M/T2
- B. M2L/T2
- C. L2M/T3
- D. ML2/T3
Correct Answer: D
D The SI unit for power, P, is the watt, where 1 watt = 1 joule per second. One joule is equal to 1 newton?meter, and 1 newton = 1 kg?m/s2. Therefore,