Question Detail

PHY 101 Physical Quantities, Units, and Dimensions Objective Question

Question

The unit 'Newton' (N) is a derived unit equivalent to which combination of base units?
Options
A kg m s⁻¹
B kg m s⁻²
Correct Answer
C kg m² s⁻²
D kg m² s⁻³
Correct Answer

Option B is the correct answer.

Detailed Explanation

A Newton is the SI unit of force. From Newton's second law, force = mass × acceleration. The base units for mass is kg, and for acceleration is m/s². Therefore, 1 N = 1 kg m s⁻².

Hint

Recall the definition of force in terms of mass and acceleration (F = ma). Substitute the base units for these quantities.

Question Info