An object is moving at uniform speed along circumference of a circle of radius 30m. If it completes one round in 20 second, find its speed and velocity after 45 second.
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Answer:
Assuming uniform motion, after 45 seconds body will have finished
20
45
=2.25 rounds, i.e., if it starts from A it will be at B after 45 seconds.
Now, displacement AB=
R
2
+R
2
=
2
R
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