I am having a tough time getting these two problems on tonights calc homeowork. Help would be much appreciated.

1. A baseball diamond is a square with side 90 ft. A batter hits the ball and runs toward first base with a speed of 25 ft/s.

(a) At what rate is his distance from second base decreasing when he is halfway to first base? m/s

(b) At what rate is his distance from third base increasing at the same moment? m/s

2.

A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m higher than the bow of the boat. If the rope is pulled in at a rate of 1 m/s, how fast is the boat approaching the dock when it is 6 m from the dock?

Answer in m/s-[IMG]file:///C:/DOCUME%7E1/User/LOCALS%7E1/Temp/moz-screenshot.jpg[/IMG]