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Air Resistance and Terminal Velocity

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Question: A car is driving at constant speed on a motorway. The resultant force on the car is:

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Quote of the day...

Growth is one of the stupidest purposes ever invented by any culture. We've got to have an enough. We have got to ask growth for what, and why, for whom, and who pays the cost, and how long can it last, and what's the cost to the planet, and how much is enough?

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