a. vf=vi+gt
g is downward, as is vi
b. distance= vi*t+1/2 g t^2 again, vi, g are negative.
A small mailbag is released from a helicopter that is descending steadily at 2.87 m/s.
a)After 5.00 s, what is the speed of the mailbag?
b)How far is it below the helicopter?
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