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1) A jetline touches down at 275 km/hr on a 1.2-km-long runway. What’s theminimum safe value for the magnitude of its acceleration as it slows down?
2) An online retailer makes deliveries by drone, and packages the goods so theycan withstand an impact at up to 10.0 m/s.
(a) What’s the maximum height from which the drone can safely drop a package?
(b) How long is the package in the air?
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