The distance covered as depicted by the graph is:-diameter 200m in 40 seconds
(a) 140m
(b) 100m
(c) 110m
(d) 120m
Plz choose the appropriate option
Class 9th
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Answer:
a) 140m
Explanation:
The diameter of the circular track = 200 m
Radius (r) = 200/2
r = 100 m
Time is taken by an athlete to complete one round = 40 seconds.
Displacement = ??
Speed = Distance/Time
Total time athlete moves – 2 min 20 seconds
2 min 20 seconds = 2 × 60 + 20
2 min 20 seconds = 140 seconds
hope it helps bro
Answered by
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The distance covered by the object is given by the area covered by the velocity-time graph.
In the following question,
the distance covered by the object is given by the area of trapezium under the velocity-time graph.
The area of trapezium is given by *h,
where h= height
a = base
b= base
In the graph, h= 8, a= 10 and b= 20.
Area= *h = *8
= 120 m.
Hence, the distance covered by the object is 120m.
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