Answer :
The amount of energy converted to heat and sound is about 1.5
What is energy ?
energy is ability to do work.
Scientists define energy as the the ability to do work. Modern civilization is the possible because people to have learned how to change to the energy from one form to another and then use it to do work.
Despite this confusing to definition it is meaning is very simple: energy is to just the force that causes things are to move. Energy is to divided into two types of there are potential and kinetic.
Sol- as per the given data
1 kg ball dropped from a height of = 3m
Rebound after hitting the ground is =1.5m
Now we have to find the potential energy P.E
Let mass of the ball is m
potential energy at height H,(P.E)1=mgH
potential energy at height h (P,E)2=mgh
Find the percentage loss in the potential energy
Loss in the potential energy
∆P.E =mg(H-h)
Percentage loss in the potential energy,
∆P.E =mg (H-h)
Percentage loss in the potential energy,
%∆(P.E)= [mg(H-h)/mgH×100]%
=[mg(3-1.5)/mg×2]
=1.5
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