Question

A body moves along a semi circle of radius calculate the displacement and distance travelled

Answer 1

Answer:

In this semicircle, the shortest distance between the two points A and B is the diameter of the semicircle. Diameter is twice the radius. So, the magnitude of the displacement is $2R$. The ratio of distance to displacement is $\dfrac{\pi}{}2$.

Answer 2

Explanation:

The displacement is he shortest path between starting and ending point

So, the displacement when Radius=r will be equal to diameter of the circle = 2× radius

or Displacement= 2r

As, distance will be total length of the path travelled

So, the distance traveled will be the circumference of the semi circle

As circumference of semi-circle = pi ×r

So, Distance travelled = pi × r

Please use the symbol of pi when writing in notebook

Hope this helps...

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