Question

A 1500 kg hatchback is heading south on a north-south street and runs into an SUV of mass 2200 kg heading west through the same intersection. At the time of the crash, the two vehicles stick together and go off together. The coefficient of kinetic friction between the tires and the street is given to be 0.750. The policeman arriving on the scene of the accident finds that the two vehicles slid 6.43 m south and 5.32 m west of the impact point before coming to rest. answer given below but i need steps.
(a) How much work was done by friction in stopping the vehicles after the collision?

5.32 m 6.43 m Final stopping point of vehicles

(b) Find the initial velocities of each of the vehicles just before the crash.

Answer 1