A man lifts a 25.9 kg bucket from a well and does 5.92 kJ of work.The acceleration of gravity is 9.8 m/s^2 . How deep is the wel
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Answer:
C. 50%
Explanation:
Lets consider that the mass of taffy is m and its initial velocity is u and final velocity is v. Momentum is conserved so we can write it as,
The initial kinetic energy =
As the Kinetic energy partly converted into heat.
The final kinetic energy = =
Change in the kinetic energy =
now we can determine the fraction of kinetic energy that has turned into heat
= =
= 50%