Question

A body is moving along a circular path of raduis R. what will be the distance and displacement of the body when it completes half a revolution?
1) What is the average speed?
2) How far does it travel in 1 sec?
3) How long does it take to travel 240m?
​

Answer 1

Answer:

Displacement is the shortest distance travelled from the initial point to the final point. After half revolution the displacement is the length of the diameter which is equal to 2r. Hence the displacement is 2r.

Answer 2

Answer:

Displacement is the shortest distance travelled from the initial point to the final point. After half revolution the displacement is the length of the diameter which is equal to 2r. Hence the displacement is 2r.

Displacement is the minimum distance between the start and end point. Hence, the displacement in this case will be the diameter of the circle, i.e., 2R.

Distance is the length of path covered by the particle/object. Here, the distance will be πR.

Therefore, the ratio of displacement to distance is 2 : π

Hope this will help you!!

Thank you!!

Please mark me as a BRAINLIEST !!