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Answer :
The thermal energy was generated by friction is 180490.52J.
What is thermal energy?
Molecules moving within an item or substance are referred to as thermally moving. The sun is the main source of thermal energy in our solar system, but every material possesses some form of thermal energy. Heat is a flow of thermal energy that occurs when energy is transferred from one substance or object to another.
Given,
Initial speed = 114km/h = 114000/3600 = 31.66 m/s
Height = 25m
[tex]E_{intial} = E_{final}[/tex]
mg[tex]y_{i}[/tex] + 1/2m[tex]v^{2} _{i{} }[/tex] = mg[tex]y_{f}[/tex] +1/2m[tex]v^{2} _{f{} }[/tex]
Solving [tex]y_{f}[/tex] we have,
[tex]y_{f}[/tex] = m(g[tex]y_{i}[/tex] + 1/2m[tex]v^{2} _{i{} }[/tex]-1/2m[tex]v^{2} _{f{} }[/tex])
[tex]y_{f}[/tex] = (0+ 1/2 (114×1000/60×60)²-0)/9.8
[tex]y_{f}[/tex] = h = 50.94m
loss of energy = mg (50.94 - 25)
loss of energy = 710× 9.8× 25.94
loss of energy = 180490.52J.
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