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Physics – and most science subjects – can be very complicated. This is your time to take a deep breath, close your eyes, and count to five. So you understand the physical situation now, and you know what subject this question deals with (or multiple subjects).Describing our world is not always intuitive, and sometimes requires a mathematical and conceptual understanding that is very advanced. In lower level physics, most questions can be solved by simple formulas. Is it Superman’s velocity as he flies to save Lois Lane a certain distance away? Now, read the question again, and make sure you are clear on what it actually requires you to find.
These will help whether the problem is in a homework assignment or on an exam. A car starting from rest, for instance, means your initial velocity is zero.
Two objects falling from a window might behave differently if they are both attached to one another.
What you are expected to do is to understand the concepts and use the tools available to you.
The most important of those tools are the formulas.
This will help you see the variables in front of you clearly, find the proper equation to use, and see what you’re missing.
It will also make the original, confusing text unneeded.
This begins with very basic physics, but continues with higher level material.
The difference seems to be that only those who like physics – and find a good way of dealing with it – stick around to deal with the higher level stuff. You don’t have to understand all the small details, but once you know what you’re dealing with in general, you will know how to formulate your answer and which equations to use.
Other times, there will be variables whose purpose is revealed in a later part of the question.
For example, if the question has a car that starts to move from rest and takes 5 minutes to reach a speed of 20 km/h, you should write down the basic variables like so: Do this with all the information you get out of the question.