In a long distance race,the athletes were expected to take four rounds of the track such that the finish line was the same as the start line. Suppose the length of the track was $200 \ m$.
$(a)$ What is the total distance to be covered by the athletes?
$(b)$ What is the displacement of the athletes when they touch the finish line?
$(c)$ Is the motion of the athletes uniform or nonuniform?
$(d)$ Is the displacement of an athlete and the distance moved by him at the end of the race equal?
$(a)$ What is the total distance to be covered by the athletes?
$(b)$ What is the displacement of the athletes when they touch the finish line?
$(c)$ Is the motion of the athletes uniform or nonuniform?
$(d)$ Is the displacement of an athlete and the distance moved by him at the end of the race equal?
(D) The total distance is $200 \ m \times 4 = 800 \ m$.
$(b)$ Since the athletes return to the starting point,their displacement is $0 \ m$.
$(c)$ Since the velocity of the athletes changes throughout the race,their motion is nonuniform.
$(d)$ No,the displacement $(0 \ m)$ and the distance travelled $(800 \ m)$ are not equal.
$(b)$ Since the athletes return to the starting point,their displacement is $0 \ m$.
$(c)$ Since the velocity of the athletes changes throughout the race,their motion is nonuniform.
$(d)$ No,the displacement $(0 \ m)$ and the distance travelled $(800 \ m)$ are not equal.
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