A ball weighing 15N falls from a height of 30 meters. Calculate the energy it had when it was at rest. What is the form of energy it experiences once it reaches the ground? (Consider g=10m/s square
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Answer:-
Given:-
mg is the weight of the ball
Weight (mg) = 15N mg is the weight of the ball
Height = 30m
At the highest point of the ball Journey, velocity of the body will be zero and will be in the form of Potential Energy.
Total mechanical energy = Potential energy + kinetic energy
kinetic energy is zero.
⇒E = mg × h
⇒E = 15 × 30
⇒E = 450 J.
Hence, total energy of the body is 450 J.
when, it reaches the ground there will be impusle.
Explanation:-
Mechanical energy is the sum of potential energy and kinetic energy. It is the energy associated with the motion and position of an object.
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