The detailed answer provides explanations on calculating kinetic energy, speed after wind effect, and air resistance work in physics problems.
Kinetic energy of the plane:
The kinetic energy formula is KE = 0.5 mass velocity^2. Calculate the kinetic energy using the given mass and speed of the plane.
Speed after wind effect:
Subtract the energy lost per second due to wind from the initial kinetic energy to find the new speed after 25 seconds.
Air resistance work:
Calculate the work done using the change in speed of the ball and the distance it traveled vertically.
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