Question

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Answer 1

Answer:

3.Mechanical energy is the sum of potential energy and kinetic energy. The only condition under which Mechanical energy is conserved is that all the forces acting on it should be conservative forces. ahlukileoi and 33 more users found this answer helpful.

4.The basic difference between uniform and non uniform motion is that: In uniform motion, a body moves with a constant speed such as the Motion of earth around the sun. While in non-uniform motion a body moves with a variable speed such as a Horse running in the race.

Answer 2

Answer:

3 answer Condition:Condition under which the mechanical energy is conserved is "WHEN THERE ARE NO FRICTIONAL FORCES." In other words the mechanical energy is conserved strictly in vacuum where friction due to air is absent.

Explanation:

4 The basic difference between uniform and non uniform motion is that: In uniform motion, a body moves with a constant speed such as the Motion of earth around the sun. While in non-uniform motion a body moves with a variable speed such as a Horse running in the race.