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Matter In Our Surroundings
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.
(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 or non-uniform ?
(d) Is the displacement of an athlete and the distance moved by him at the end of the race equal ?
Given,
Length of the track = 200 m
Expected rounds athlete are supposed to take = 4
(a) Total distance covered by each athlete = 4 × 200 = 800 m.
(b) As the line of finish is the same as the line of start, so displacement of each athlete = 0.
(c) Motion of the athletes is non-uniform as the speed of the athlete will be changing at each point.
(d) From parts (a) and (b), the distance and displacement of an athlete are not equal at the end of the race.
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a) 25°C
b)00C
c)1000C
What is the physical state of water at
0°C
What is the physical state of water at
100°C
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