Answer to Question #109076 in Physics for Victoria Kegel

Question #109076

please help!!!!! Flossy ‘Foo Foo’ Fanelli reaches a speed of 350 km/h from rest in 6.2 s in her dragster. If the car is 800 kg and generates a driving force of 16 000 N, find the force of friction
acting on the car.

Expert's answer

ma=m\frac{\Delta v}{\Delta t}=F-F_f

800\frac{350}{6.2\cdot 3.6}=16000-F_f

F_f=3500\ N

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