Question

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 200 m. The what is the displacement of the athletes when they touch the finish line? *​

Answer 1

Answer:hope it is clear to you please mark as brilliant answer

Explanation:

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 - initial position =0

{ we know, according 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

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) never !!!

because , displacement = 0

but distance = 1600m = 1.6 km