Motion of an object dropped from a descending and ascending helicopter

lundi 29 juillet 2013

[b]1.

a) A small mail bag is released from a helicopter that is descending steadily at 3.34 m/s. After 2.95 s, what is the speed of the mailbag? The acceleration of gravity is 9.8 m/s2 . Answer in units of m/s



b) After the mailbag is dropped, the helicopter continues descending for 1 s but then stops. How far is the mailbag below the helicopter at 2.95 s? Answer in units of m



c) What would be the speed of the mailbag if the helicopter had been rising steadily at u = 3.34 m/s ? (Take down as positive.) Answer in units of m/s





[b]2. vf = vi + at





[b]3. I've already gotten the answer to a) which is 32.25m/s, but I do not know how to do b) or c) from my answer to a).






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