Distance Traversed and Displacement
Distance Traversed and Displacement
Distance Travelled and Displacement:
The distance travelled by a body is the actual length of the path covered by it. Irrespective of the direction in which the body travels. It is a scalar quantity. Its SI unit is Metre.
The displacement is the change in the position of the object when it moves from a given position to another position. It gives the shortest path measured in the direction from the initial position to the final position of the object. It’s a vector quantity. Its SI unit is metre.
We can calculate speed with the help of distance travelled and velocity using displacement of the object.
Question : John travels 250 miles to North but then back tracks to South for 105 miles to pick up a friend. What is john's total displacement?
Answer: John's starting position = 0
Her final position
is the distance travelled N minus the distance South.
Calculating displacement, i.e D
D =
D = = (
-
)
D = (250 - 105)
D = 145 miles N
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