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I'm using an accelerometer to record the rate of acceleration of a vehicle over time (1500kg). With this data I am calculating speed and distance traveled over time. I'm now trying to figure out a way to calculate either the torque or the power produced by the engine over time (I can calculate the other using recorded rpm @ the time). Drive train losses, rolling resistance and aerodynamic drag will all play their part, but I shall ignore these presently till I figure out this first bit.

Thanks much for reading.

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Power(watts) = torque(Neutons) times speed (in radians per second).

Average power (watts) = change in kinetic energy (joules) divided by elapsed time (seconds). So a 1500 Kg car going fom 0 to 30 meters per sec in 5 seconds is

(1/2)Mv2/time = (1/2) 1500 302/ 5 sec = 135,000 joules per sec = 181 HP

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