In: Physics
The police are investigating a rear-end collision between two automobiles at an intersection. The approaching automobile has a mass of 1800 kg and an unknown velocity. It makes a rear-end collision with a stationary car whose mass is 2230 kg. The cars lock bumpers and skid off together and come to rest after skidding 10.5 metres. The skid marks indicate that the stationary car had its wheels locked but the approaching car did not. If the coefficient of kinetic friction between the wheels of the car and the pavement is 0.589, determine the initial speed of the approaching automobile just before the collision.