A 61-kg lumberjack stands on a320-kg log that floats on a pond.Both the log and the lumberjackare at rest initially. In addition,the log points directly toward theshore, which we take to be thepositive x direction. (a) If the lumberjack trots along the log towardthe shore with a speed v relativeto the shore, the log moves awayfrom the shore. Is the speed ofthe log relative to the shore greaterthan, less than, or equal to v? Explain. (b) If the lumberjack trotswith a velocity of 1.8 m>s relative to the shore, what is the velocity of the log relative tothe shore? Ignore friction between the log and the water.

A 61-kg lumberjack stands on a320-kg log that floats on a pond.Both the log and the lumberjackare at rest initially. In addition,the log points directly toward theshore, which we take to be thepositive x direction. (a) If the lumberjack trots along the log towardthe shore with a speed v relativeto the shore, the log moves awayfrom the shore. Is the speed ofthe log relative to the shore greaterthan, less than, or equal to v? Explain. (b) If the lumberjack trotswith a velocity of 1.8 m>s relative to the shore, what is the velocity of the log relative tothe shore? Ignore friction between the log and the water.

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