Dave and Tony find a kinematics puzzle on the internet. The puzzle asks if it was faster to get somewhere if you walk half the distance and then run the other half of the distance OR if you walk for half of the time and then run for the other half of the time.

b)Let's use some physics to figure it out. Let's say that the total distance traveled is D, and that the walking speed (v) is half as fast as the running speed (2v). Call tD the total time that is takes Dave (who splits the distance half and half) and tT the total time that is takes Tony (who splits the time half and half). Find tD and tT in terms of D and v