Question Detail

PHY 101 Last Min Prep Objective Question

Question

Which of the following are the correct S.I. units of the quantities indicated? I. Ns (Momentum) II. Nm (Work) III. Watt/s (Power) IV. kgm/s² (Force).
Options
A I and II only
B I, II and III only
C I, II and IV only
Correct Answer
D I, II, III and IV only
Correct Answer

Option C is the correct answer.

Detailed Explanation

I. Ns = kg·m/s, which is momentum (correct). II. Nm = J, which is work (correct). III. Watt/s is not the SI unit of power; power is Watt (J/s). IV. kgm/s² = N, which is force (correct). So I, II, and IV are correct.

Hint

Check each unit against the definition of the quantity.

Question Info