Q1. At one point in a pipeline, water's speed is 3.30 m/s and the gauge pressure is 4.00×10^4 Pa. Find out the gauge pressure at a second point in the line 13.0 m lower than the first if the pipe diameter at the second point is twice that at the first.
Q2. A Toyota Prius driving north at 62.0 and a VW Passat driving south at 40.0 are on the same road heading toward each other (but in different lanes). (We take the positive direction to be north.)
What is the velocity of VW Passat relative to the Toyota Prius when they are 480 apart, after they have passed each other?