If a portable computer with an accelerometer is accidentally dropped, the device detects it and puts the hard drive into safe mode. After reading the accelerometer and installing a program that calculates the apparent weight of the computer on the computer, the computer was carried on a long flight. The computer weighed $5$ pounds, and the program continued to report that way during flight. Then the apparent weight of the computer reported by the program for $12$ seconds, when it suddenly encounters an airplane turbulence and fluctuates, is depicted in Figure $4\mathrm{.}27.$ The magnitude of the greatest vertical acceleration experienced by an airplane during the time period shown in the graph is about the same