In a long distance race, the athletes were expected to take four rounds of the track such that the line of finish was same as the line of start suppose the length of the track was 200m
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 and non-unifom?
d) Is the displacement of an athelete and the distance moved by him at the end of the race equal?
plz guys give answer with explaination
Answers
Answer:-
a. Total distance. = 1 mile.
b. Displacement =0
c. Non-uniform motion
d. No
The Perfect Explaination:-
When we finish line is same as that of initial line , it means length of one round =
finish line is same as that of initial line , it means length of one round =2 × Length of track = 2 × 200 = 400 m.
(a) Total distance covered by athletics
=>4 × Length of one round
=> 4 × 400 = 1600 m
=> 1.6 Km
=>1 mile.
(b) displacement covered by athletics = final position - inital position = 0.
(c) we probably say that motion of athletic is non - uniform motion because in question , never include about athletic speed , { e.g constant or not }but practically athletic moves non - uniform motion , because sometime he accelerates own motion , sometimes do slow .
(d) No
because , displacement = 0
but distance = 1600m = 1.6 km
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Kaustubh
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