Question

In SI units, \( \text{kg m}^2 \text{s}^{-2} \) is equivalent to which of the following?

• A. newton
• B. watt
• C. joule
• D. pascal

Hint:

Memorize SI units: joule = \( \text{kg m}^2 \text{s}^{-2} \), newton = \( \text{kg m s}^{-2} \), watt = \( \text{kg m}^2 \text{s}^{-3} \), pascal = \( \text{kg m}^{-1} \text{s}^{-2} \).

Answer 1

The Correct Option is C

In SI units, the unit of energy is the joule (J), which is defined as: \[ 1\ \text{joule} = 1\ \text{kg m}^2 \text{s}^{-2} \] Therefore, \( \text{kg m}^2 \text{s}^{-2} \) corresponds to joule.