Asked by wayne

A model helicopter and its load have a combined mass of 3.5 kg. Find the upward average force, in Newtons, exerted by the air if the helicopter is originally moving downward at 10 m/s and is brought to rest with constant acceleration in a distance of 50 m.
Answered by a
Fnet = ma
F-mg = ma
a = constant = 0
F = mg

Answered by a
40 N
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