I have a degree in physics so maybe I can offer some ideas:
-rotational enertia: engines, wheels, other spinning parts on vehicles--how do they affect the stability?
-car modding 101: how much force is generated from a stock car to propel it from a stop to 100mph in x seconds, then modding that car (+100hp or somethign) drops the 0-100mph time to x - n seconds. Tons of directions to go here. Start with how much additional force needs to be generated to drop the time by a second, then two seconds, etc. Try and equate that back into horsepower based on practical real-world results found on the internet or your personal testing (hint: we have a dyno locally, and you could see how much power your car makes at different boost levels, then do different 0-100 runs
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real world shit like that always blows profs away and people love it. I did a whole project once on the amount of force was placed on the a skier's leg bones while jumping from 5-10-20-30-40 feet and landing at various angles. It was easy as hell and I got an A+ on it. My prof new I was into skiing, which goes back to the real-world stuff I mentioned above.
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