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Sagot :
Answer:
(a)A person moves a distance of 3 km towards east, then 2 km towards north and then 3.5 km towards east.
Find :
(i) the distance covered by the person
Solution:
3 km+2km+3.5km
And at least total distance 8.5 km
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(ii) the displacement of this motion.
Solution:
Displacement is the length of the shortest path between the initial and the final position. It is a vector quantity (Vector quantities are the ones which have both magnitude,called speed and direction)
Here displacement can be found out using Pythagorean theorem
Displacement 2=2²+6.5²
Displacement=√4+42.25
Displacement=√46.25-6.8(approx)
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(b) Name the type of motion in which a body has uniform speed but not uniform velocity ?
Solution:
In circulation motion body has constant speed but do not have constant velocity.
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