A student stands on a scale in an elevator at rest. He is on the 64th floor of a building. The balance shows 836N. A.) The elevator moves up, the reading rises to 936N and then drops to 836N. Find the acceleration of the elevator.
B.)As you approach the 74th floor, the reading drops to 782N. What is the acceleration of the elevator now?
C.) What changes would you expect in the readings on the way down?

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.

The total amount of energy contained in an object

How many meters will a car travel if its speed is 45 m/s in an interval of 11 seconds? question 2 options: a) 450 meters b) 495 meters c) 4.09 meters d) 498 meters