- #1
aham925925
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Homework Statement
A model airplane is controlled to fly in a horizontal circle of radius 24 metres with a constant speed of 20ms-1. An observer beneath the plane notices that the plane is flying anticlockwise. Find the magnitude of the change in velocity of the plane after:
a- a full revolution
b- a quarter of a revolution
c- a half revolution
Homework Equations
I have no idea on any equations. We haven't started the study of circular motion yet.
The Attempt at a Solution
I really don't know where to start here. I guessed that the change in velocity after a full revolution would be 0 and that was correct (displacement =0) but I am not sure on the other ones (B and C). They seem like random answers. Any ideas??