Question

6. A person travels on a semicircular track of radius 50 m during a morning walk. If he
starts from one end of the track and reaches the other end, calculate the distance
travelled and the displacement of the person.
the cast then 9 m towards the south and​

Answer 1

Explanation:

distance is the length travelled by his feet

length of semi circular track is πr

so he covers πr distance with his feet . calculate it.

DISPLACEMENT is the length which he can easily reaches his destination

in the si circular track the easiest way is along the diameter. so displacement is the diameter . calculate it

Answer 2

Concept:

Distance - Distance is a measurement of how far apart two objects or locations are.

Displacement- The displacement is only the difference between the locations of points 1 and 2 and is independent to the route used to get there.

To find-the distance travelled and the displacement of the person.

Given- The radius of the track = 50 m

Explanation:

The radius of the track = 50 m

The track is semi-circular then,

we have to find the distance and displacement

Let the person go from A and travel to B through C where C lies on the track,

The distance covered by the person is then equal to the length of the semi-circular track.=

$\pi r=22/7*50=157.14 m$

The displacement is determined by measuring the diameter of the semi-circular track joining the initial and final positions as the shortest distance between them.

A to B via O, which lies on the diameter of the semicircular track

$=2r=2*50m=100m.$

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