Question Detail

PHY 101 PHY 101 Past Questions Objective Question

Question

What are the units of power?
Options
A kg m² s⁻²
B kg m² s⁻³
Correct Answer
C kg m³ s⁻²
D kg m⁻¹ s⁻²
Correct Answer

Option B is the correct answer.

Detailed Explanation

Power = work/time = force × velocity. Units: (kg m/s²) × (m/s) = kg m²/s³.

Hint

1 W = 1 J/s = 1 kg m²/s³.

Question Info