Question:
An athlete runs exactly once around a circular track of length $ 500\,m $ . The runners displacement in the race is
An athlete runs exactly once around a circular track of length $ 500\,m $ . The runners displacement in the race is
Updated On: Jun 2, 2024
- $ 50\,m $
- $ 5\,m $
- $ 0.5\,m $
- $ 0\,m $
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The Correct Option is D
Solution and Explanation
Displacement is known as the distance between initial and final position. In a circular track, the initial and final position of the athlete is same, so total displacement is zero
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Concepts Used:
Motion in a Plane
It is a vector quantity. A vector quantity is a quantity having both magnitude and direction. Speed is a scalar quantity and it is a quantity having a magnitude only. Motion in a plane is also known as motion in two dimensions.
Equations of Plane Motion
The equations of motion in a straight line are:
v=u+at
s=ut+½ at2
v2-u2=2as
Where,
- v = final velocity of the particle
- u = initial velocity of the particle
- s = displacement of the particle
- a = acceleration of the particle
- t = the time interval in which the particle is in consideration