How Does Constant Power Affect Car Acceleration Times?

AI Thread Summary
Constant power output from a car's engine leads to constant acceleration, simplifying the relationship between speed and time. If a car takes 3 seconds to accelerate from 0 to 50 km/h, it will take 6 seconds to reach 100 km/h under the same conditions. The power output does not directly correlate with distance in this scenario, as the acceleration remains constant. Ignoring air resistance and other factors, the time to accelerate doubles when the speed doubles. Thus, the key takeaway is that constant power results in predictable acceleration times.
sauri
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This question; A car takes 3s to acclelerate from to 0 to 50 km/h. Assuming constant power output from the engines and ignoring air resistance, how long does it take to go from o to 100 Km/h?, has been bothering me. I orginally assumed I could use the basic kinamatic equations but the power output factor keeps throwing me off.

Using power P=W/t but how dO i associate W with the speeds?
 
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You don't. It's a simple acceleration problem. It accelerates at a constant rate.
 
Assuming constant power output and ignoring all resistance, you will have constant acceleration. It will take twice as long to accelerate from 0 to 100 as from 0 to 50 km/h.
 

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