Question

A bird mass of 200g is flying at height of 60m with speed of 40m/s.find its potential energy , kinetic energy and mechanical energy

Answer 1

Answer:

All the forces acting are conservative so mechanical emergy will be conserved for the body .

Taking ground surgace as refrence point its initial potential energy is mgh =9.8J. (converting all perameters in SI units)

And final potential energy is zero as h=0.

Also its initial kinetic energy is zero.

Now applyning law of conservation of energy we get final kinetic energy is 9.8J

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