The discussion centers on the acceleration of a car with a constant power output of 500 HP in a hypothetical scenario where resistance forces, such as aerodynamic drag and tire friction, are neglected. Participants conclude that while the car can theoretically accelerate from 0-100 km/h and 100-200 km/h in the same time frame of 4 seconds, real-world physics dictates that acceleration decreases with speed due to the relationship between power, thrust, and velocity. The key takeaway is that a car cannot maintain constant acceleration at higher speeds without accounting for resistance forces, which significantly impact performance.
PREREQUISITESAutomotive engineers, physics students, and anyone interested in understanding vehicle dynamics and the principles of acceleration in the context of resistance forces.
No this not string pulling cart.jbriggs444 said:
If you have constant 50 N force, it is a constant force device. Period. End Of Story.Jurgen M said:
It has mass of 5kg, on the Earth this aprox 50N, and when accelerate up tension in rope is bigger then 50N...jbriggs444 said:
Indeed bike can travel very fast if reduce aero drag, 183mph (295km/h) !PeroK said:
phinds said:
). Seriously the only reason a car can move is the resistance between the tyres and the road. If there is none all the wheels would do is spin - as you mentioned. I seem to recall Feynman discussing it somewhere in his lectures, which of course anyone interested in applied math/physics should read (but not after a usual course in physics without going into why).Jurgen M said: