Question

Calculate the distance and displacement of a body moving in a complete circle of
radius 7 meters.

Answer 1

Answer -

distance - 44m

displacement - 0 m

Explanation:

The distance travelled by the body is the circumference of the circle = $2\pi r$ = 2 * 22/7 * 7 = 44 m

But the displacement is 0m, since in one complete circular motion, the final position is same as the initial position. Since, displacement is defined as the shortest distance between the final and the initial position, the displacement becomes 0 m.

Answer 2

Answer:

ExplanaSolution

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Displacement = Diameter = 2× radius = 2×7=14m

Distance travelled =  

2

1

​

× circumference

=

2

1

​

×2×π×r

=

2

1

​

×2×

7

22

​

×7

=22m tion