A car moving at 35m/s on a highway catches up with two semi-trucks blocking both lanes. The car slows down to match its velocity with the Fedex truck in the left lane and follows it as it passes the UPS truck in the right lane . While stuck behind the Fedex truck, the car driver notices that both trucks are 24meter long, and it takes 3 minute for the fedex truck to finally pull ahead of the UPS truck . What is the speed of Fedex truck relative to the UPS truck