Q1. A caterpillar climbs up a one-meter wall. For every 3 cm it climbs up, it slides down 1 cm. It takes 10 minutes for the caterpillar to climb to the top. Compute the speed at which the caterpillar travels.
Q2. A 88-kg lumberjack stands at one end of a 395-kg floating log. Both the log and the lumberjack are at rest initially. If the lumberjack now trots toward the other end of the log with a speed of 2.8 m/s relative to the log, what is lumberjack's speed relative to the shore? Overlook friction between the log and the water.