Dr. Giarusso's Problem:

A bicyclist passes over the middle of bridge at the same time a moterboat goes under the middle on a path at right angles to the bridge. The center span is 24 m above the water and is essentially level for a distance of 100 m. If the bicyclist is moving at a constant rate of 10 m/sec and the boat is moving at a constant rate of 15 m/sec, find the rate at which the distance between them is changing 4 seconds later.

Due Friday, May 7th at Noon.