Question

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.​

Answer 1

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