A 1300 kg sedan goes through a wide intersection traveling from north to south when it is hit by a 2200 kg SUV traveling from east to west. The two cars become enmeshed due to the impact and slide as one thereafter. On-the-scene measurements show that the coefficient of kinetic friction between the tires of these cars and the pavement is 0.75, and the cars slide to a halt at a point 7.43 m west and 7.39 m south of the impact point.


Required:

a. How fast was sedan traveling just before the collision?

b. How fast was SUV traveling just before the collision?