First assuming no heat transfer between the rock and air

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Reference no: EM13645429

A stone with a mass of 2 kg is thrown vertically into the air by a powerful catapult to an elevation of 100 m where the velocity is 0 m/s. Acceleration due to gravity is assumed to be 9.81 m/s2.

a. First, assuming no heat transfer between the rock and air and no other losses, what is the initial velocity of the stone as it left the catapult in [m/s]?
b. What was the work done to the stone by the catapult in [J]
c. Still assuming no heat transfer between the rock and air and assuming that the stone's specific internal energy increased by 500 J/kg during its flight, what is the initial velocity of the stone as it left the catapult and the work done to the stone by the catapult?

Reference no: EM13645429

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