*15 points* for both ramp heights, you calculated the average speed for the car's entire motion (both on
the ramp and the floor), as well as the average speed for two intervals of the same motion
(interval on the ramp and interval on the floor). write a brief paragraph on how these
"intervals" describe the car's motion more accurately than the average speed of the
entire motion. be sure to explain how this accuracy could have been improved by breaking the
car's motion down into even smaller intervals.

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.

What causes the development of most clouds and precipitation in the atmosphere?