An athlete completes one round of a circular | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Diameter of circular track $(D) = 200\, m$.Radius of circular track $(r) = D / 2 = 100\, m$.Time taken for one round $(t) = 40\, s$.Total time giv

Vedclass · Accepted Answer

$Distance\, covered=2200\,m;\, Displacement=200\,m$

Vedclass · Answer

(A) Diameter of circular track $(D) = 200\, m$.Radius of circular track $(r) = D / 2 = 100\, m$.Time taken for one round $(t) = 40\, s$.Total time given $= 2\, min\, 20\, s = 140\, s$.Number of rounds $= 140 / 40 = 3.5\, rounds$.Distance covered $= 3.5 	imes (2 \pi r) = 3.5 	imes 2 	imes (22/7) 	imes 100 = 7 	imes (22/7) 	imes 100 = 2200\, m$.After $3.5\, rounds$, the athlete will be at the diametrically opposite point of the starting position.Displacement $= 	ext{Diameter of the circular track} = 200\, m$.

An athlete completes one round of a circular track of diameter $200\, m$ in $40\, s$. What will be the distance covered and the displacement at the end of $2\, min$ $20\, s$?

Similar Questions

What can you say about the motion of an object if its speed-time graph is a straight line parallel to the time axis?

Abdul,while driving to school,computes the average speed for his trip to be $20 \, km \, h^{-1}$. On his return trip along the same route,there is less traffic and the average speed is $40 \, km \, h^{-1}$. What is the average speed (in $km \, h^{-1}$) for Abdul's trip?

What does the odometer of an automobile measure?

$A$ stone is thrown in a vertically upward direction with a velocity of $5 \, m s^{-1}$. If the acceleration of the stone during its motion is $10 \, m s^{-2}$ in the downward direction,what will be the height attained by the stone and how much time will it take to reach there?

$A$ train is travelling at a speed of $90\, km \,h^{-1}$. Brakes are applied so as to produce a uniform acceleration of $-0.5\, m s^{-2}$. Find how far (in $m$) the train will go before it is brought to rest.

Vedclass Test Series

Exam Paper Generator

Online Exam Module