Question

An object is moving in a circle of radius 'r' . Calculate the distance and displacement ?
(1) when it completes half the circle.
(2) when it completes one full circle .

Answer 1

Answer:

we should find the perimeter

Explanation:

circle=2Pie r

1.2pie r /2 is distance

displacement will be the another half...which it covered

2.distance is 2pie r

displacement is 0

hope this helps

Answer 2

Answer :

(1) Distance = πr.

Displacement = 2r.

(2) Distance = 2πr.

Displacement = 0.

Step-by-step explanation :

(1) When object completes the half circle.

• Distance covered by the object.

= ½ × 2πr.

= πr.

• Displacement of the object = diameter of the circle.

D = 2r.

(2) When object completes the one full circle.

• Distance covered by the object = 2πr.

• Displacement of the object = 0.

= (Because Initial position and the Final position of the object is same).