I need to drive from A to C via B at total distance of ΔL. The distance from A to B is ΔL1, from B to C is ΔL2. I have time Δt to get from A to C, so I figure I can make it if I average = ΔL/Δt for the entire trip. Going from A to B, the traffic is heavy and I can only average a speed v1. How fast do I have to go from B to C in order to average for the whole trip? Write an equation expressing v2 (the speed I need to average going from B to C) in terms of the other symbols given: v1, ΔL1, ΔL2, and Δt.

Gaby and her cousin, Fiona, live 45 km apart.  Every day, they drive by one another to get to work.  Gaby leaves home at 7:00 a.m. and drives at the road speed of 60 km/h.  Fiona, however, always leaves home 20 min later and therefore speeds by 10 km/h.  Approximately what time will Gaby meet Fiona on the road?

An object is moving east with a constant speed of 25 m/s for 5 seconds. What is the object's acceleration? O 125 m/s/s O 5 m/s/s O O m/s/s O 25 m/s/s 1 3. 4.

An express train passes through a station that is 220 m long. It enters with an initial speed of 22.5 m/s and decelerates at a rate of 0.14 m/s2 as it goes through. During what time interval, in seconds, is the front of the train within the station?  How fast is the train moving, in meters per second, when its front leaves the station?  If the train is 130 m long, how long, in seconds, after the front of the train enters the station does the end of the train leave the station?  What is the velocity of the end of the train as it leaves in m/s?