At what time is the body coming to halt?

Explanation:

It ends with the failure of several organs: the cardiovascular system stops working and the lungs and brain do not function. Death is coming. There are different types of death medically. One is "clinical death," in which the cardiovascular system fails, the heart stops pumping blood, the pulse and respiration stop, and oxygen and nutrients no longer reach the organs. However, in "clinical death", cardiopulmonary resuscitation is possible through artificial respiration and cardiac massage, and in some cases is successful.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

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the moving of the box is a result of centripetal force. think of that  as a car or a truck in this case creates a turn, the force of friction performing upon the turned wheels of the car runs centripetal force obligatory for circular motion for the things inside it.