The car shown has a mass of m1250 kg and a center of mass lo

The car shown has a mass of m=1250 kg and a center of mass located at G. The coefficient of static friction between the wheels and the road is ?s=0.240. The dimensions are a=1.25 m, b=1.75 m, and c=0.290 m. Assume the car starts from rest, the wheels do not slip on the road, and that the car experiences constant acceleration. Neglect the mass of the wheels.

Part A - Shortest Time to Reach a Given Speed with Rear-Wheel Drive

Determine the shortest time it takes the car to reach a speed of v=78.0 km/h , starting from rest, if the engine drives only the rear wheels.

Express your answer to three significant figures and include the appropriate units.

Part B - Shortest Time to Reach a Given Speed with Front-Wheel Drive

Determine the shortest time it takes the car to reach a speed of v=78.0 km/h, starting from rest, if the engine drives only the front wheels.

Express your answer to three significant figures and include the appropriate units.

Part C - Shortest Time to Reach a Given Speed with All-Wheel Drive

Determine the shortest time it takes the car to reach a speed of v=78.0 km/h, starting from rest, if the engine drives all four wheels.

Express your answer to three significant figures and include the appropriate units.

Solution

The question is wrong/incomplete. Because unless you tell what is the size of the engine what are the characteristics of an engine it is difficult for us to define how much time it will take what if it has a rocket engine or it has a very slow engine because only static friction is given . Kinetic friction is not given !!!