The power of the car engine is 55 kW what is the value of the resistance force to the movement
| August 19, 2021 | education
The power of the car engine is 55 kW what is the value of the resistance force to the movement of the car at a speed of 60 km / h.
To find out the value of the resistance force to motion, consider the equality: Ftyag = Fcopr (true, since the speed is constant) = N / V, where N is the engine power (N = 55 kW = 55 * 10 ^ 3 W); V – constant speed (V = 60 km / h; in the SI system V = 16.6 (6) m / s).
Let’s perform the calculation: Fcopr = 55 * 10 ^ 3 / 16.6 (6) = 3.3 * 10 ^ 3 N.
Answer: The presented car had a resistance force of 3.3 kN.
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