The mass of a sports car is 900 kg. The shape of the car is such that the aerodynamic drag coefficient is 0.250 and the frontal area is 2.00 m2. Neglecting all other sources of friction, calculate the initial acceleration of the car ,if it has been traveling at 100 km/h and is now shifted into neutral and is allowed to coast. (Take the density of air to be 1.295 kg/m2.)
The Attempt at a Solution
I calculated it out and got that R is equal to 9, however I am not quite sure what to do with the Resistive Force.