a body moves along a rectangular field of side 3 and 4 metre with uniform speed what will be its distance travelled and magnitude of displacement after completing two and half rounds
Answers
Given : a body moves along a rectangular field of side 3 and 4 meter with uniform speed
To Find : its distance travelled and magnitude of displacement after completing two and half rounds
Solution:
rectangular field of side 3 and 4 meter
Distance
=> one round = 2 ( 3 + 4) = 14 m
two and half rounds = 2.5 * 14 = 35 m
Displacement :
After two round it will be at original position
further half round will take it to a diagonal position.
Distances 3 and 4 are perpendicular to Each other
Hence Displacement = √3² + 4² = 5 m
distance travelled after completing two and half rounds = 35 m
magnitude of displacement after completing two and half rounds = 5 m
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