Directions
Read the following questions. Choose the right answer.
There is only ONE correct answer to each question.
A coin rests on a paper board that is placed over the mouth of a glass. If the paper board is pulled quickly by a horizontal force, the coin will fall into the glass. This observation is an application of:
- torque
- inertia
- coupling
- impulse
Show answer
Correct answer: B. inertia
Why
The coin's inertia keeps it resisting a change in motion, so when the board is pulled away quickly, the coin tends to stay in place and drops into the glass instead of moving with the board.