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Consider a 4-mg raindrop that falls from a cloud at a height of 2 km. Part a)...

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Physics

Consider a 4-mg raindrop that falls from a cloud at a height of2 km.

Part a) If we neglect air resistance, what would be the speed ofthe raindrop when it reaches the ground? Assume that the fallingraindrop maintains its shape so that no energy is lost to thedeformation of the droplet.

________ m/s

Part b) When the raindrop reaches the ground, it won't kill youor even bruise you because its terminal velocity is just 10 m/s.Calculate the work done by the air resistance on theraindrop. Recall that positive work done on anobject/system increases the energy of that object/system. Again,assume that the falling raindrop maintains its shape so that noenergy is lost to the deformation of the droplet.

________ Joules

Part c) What percentage of the raindrop's initial mechanicalenergy was lost to air resistance? (Based on your answers, askyourself if you think it is reasonable to ignore air resistancewhen evaluating the fall of a raindrop from the sky.)

________ %

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