A stone is thrown horizontally at +17 m/s from the top of a cliff 40 high. a) How long does the stone take to reach the bottom of the cliff? b) How far from the base of the cliff does the stone strike th ground? c) What is the speed of the stone just before it strikes th ground?

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Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.