Question

The following is a conversation between three friends:

Ram – I am experiencing a force of friction
Pamela – I am experiencing an air drag
Nikita – I am experiencing viscosity

Choose the possible correct inferences from the options.

• A. Ram might be under motion on the ground
• B. Pamela might be falling freely from a height
• C. Nikita might be swimming under water
• D. Nikita might be at rest

Answer 1

Answer: (A), (B), (C)

The correct options are
A Ram might be under motion on the ground
B Pamela might be falling freely from a height
C Nikita might be swimming under water

Whenever there is a relative motion, there seems to be some force which opposes it - no matter which medium the motion is - solids, liquids or gases. Though the nature of this opposing force is almost similar in all media, we call them with different names.

Depending on whether the medium is a solid, liquid or a gas, the opposing force is termed as friction, viscosity or air drag respectively.

Hence from the conversation, we can say that Ram is within a solid medium and so he could be on the ground, whereas Pamela and Nikita are in a gaseous (or air) and Liquid (water) respectively.