Final answer:
After solving a problem, one should check the units, evaluate the answer's reasonability, and ensure proper use of significant figures to confirm the answer is logical and accurate.
Step-by-step explanation:
After obtaining a numerical answer when solving a problem, it is important to:
- Check the units to ensure that they are consistent with the expected result and that they have been correctly derived and applied.
- Evaluate the answer's reasonability by considering the magnitude, direction, and sign to determine if they make sense in the context of the problem.
- Respect the significant figures used in the problem, rounding the answer appropriately based on the number of significant figures in the given measurements.
These steps help to ensure that the answer is not only numerically correct but also makes physical sense within the context of the problem thus accurately describing natural phenomena as intended in physics.