Question

A small mailbag is released from a helicopter that is descending steadily at 1.11 m/s. (a) After 3.00 s, what is the speed of the mailbag? (b) How far is it below the helicopter in m? (c) What are the answers to parts (a) and (b) if the helicopter is rising steadily at 1.11m/s, in m/s and m respectively?

A record of travel along a straight path is as follows:

1. Start from rest with constant acceleration of 2.60 m/s² for 10.0 s.
2. Maintain a constant velocity for the next 1.40 min.
3. Apply a constant negative acceleration of −9.13 m/s² for 2.85 s.

(a) What was the total displacement for the trip?


(b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip?

Answer 1

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