An athlete runs along a circular track of radius 20m.Calculate the distance and displacement covered by him after completing one and a half round.
it should be 62.8
i think
To calculate the distance covered by the athlete, we can use the formula:
Distance = Circumference of the circular track * Number of rounds
The circumference of a circle can be calculated using the formula:
Circumference = 2 * π * radius
Given that the radius of the circular track is 20m, we can find the circumference as:
Circumference = 2 * 3.14 * 20m = 125.6m
Since the athlete completes one and a half rounds, the number of rounds is 1.5. Therefore, the distance covered by the athlete is:
Distance = 125.6m * 1.5 = 188.4m
Now let's calculate the displacement. Displacement is a vector quantity that represents the straight-line distance between the initial and final position.
For one and a half rounds, the initial and final positions coincide with each other. Hence, the displacement will be zero since the athlete ends up at the same position as where he started.
Therefore, the displacement covered by the athlete after completing one and a half rounds is zero.