Question

In a long distance race, the athlete was expected to take 4 rounds of

the track such that the line of finish was the same as line of start.

Suppose the length of the track in 200 m, Find distance and

displacement at the end of the race.​

Answer 1

Answer:

when 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

{ we know, accroding to question one round equal final position is same as initial position so, displacement in one round = 0 hence, displacement in 4 rounds = 0}

(C) we probably say that motion of athletic is non - uniform motion

becoz in question , never include about athletic speed , { e.g constant or not }

but practically athletic moves non - uniform motion , becoz sometime he accelerates own motion , sometimes do slow .

(d) never !!!

because , displacement = 0

but distance = 1600m = 1.6 km

Explanation:

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