Question

an athlete completes one round of a circular track of diameter 42m in 20sec calculate the distance covered and displacement at the end of 50sec plzzzzz i will make you brainlyyyyyyyy

Answer 1

hey mate,here is your answer
length AB=200m=2R

time taken to complete one round=40 sec

let the starting point be A

in 140 sec or 2 min 20 sec number of rounds completed=14040=3.5"

displacement refers to change in position from the starting point.the final point is B

as after 3.5 revolutions(starting from A) the athlete will be at B.

displacement=200m

hope helps you

Answer 2

$\pink{\huge{\underline{\star\: Solution \: \star}}}$

divide 50 sec-

10+20+20

R+2R+2R

u will get, 330m as ur distance

after 40 sec athlete will cover 2 round so after more 10 sec he will be at just

opposite point,i.e, along diameter so displacement will be 42m only

$\purple{\huge{\underline{\star\: Answer = 42m \: \star}}}$