3. (15 points) Bob is painting his house but did not secure his 13 ft ladder before climbing it. As he climbs up, the ladder slides down the side of the house at a constant rate of 2 ft / min. How quickly is the base of the ladder sliding horizontally away from the house when it's 5 it away from the wall. 4. At time t seconds, the position of a body moving along the yaxis is 3(t) = e'2t meters. (a) (3 points) Find the velocity as a function of time. (b) (3 points) Find the acceleration as a function of time. (c) (6 points) During the rst 10 seconds, at what time was the body farthest from its point of departure? How far was it