Question 18
Question 18 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
5. Work, energy and power
5.1. Energy conservation

define power as work done per unit time

3. Dynamics
3.2. Non-uniform motion

understand that objects moving against a resistive force may reach a terminal (constant) velocity

15. Ideal gases
15.3. Kinetic theory of gases

understand that the root-mean-square speed cr.m.s. is given by √<c²>