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CBSE Class 9 Answered

An athlete completes two rounds of a circular track and returns to the starting point.What is the distance covered by the athelet and his displacement?
Asked by vimlasagar96 | 14 Jun, 2018, 11:19: AM
answered-by-expert Expert Answer
Distance covered = twice the circumference = 2×2πR = 4πR, where R is radius of circular track.
 
Displacement is zero because athelete has returned  to staring point.
Answered by Thiyagarajan K | 14 Jun, 2018, 11:59: AM

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CBSE 9 - Physics
An object of mass 1kg is falling from the height h=10m.calculate a) the total energy of an object at h=10m b) potential energy of the object when it is at h=4m c) kinetic energy of the object when it is at h=4m d) what will be the speed of the object when it hits the ground
Asked by mailtoparvathyprajith | 08 Feb, 2024, 06:45: PM
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CBSE 9 - Physics
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CBSE 9 - Physics
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Asked by mailtoparvathyprajith | 08 Feb, 2024, 12:13: PM
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CBSE 9 - Physics
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Asked by mailtoparvathyprajith | 06 Feb, 2024, 09:50: PM
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CBSE 9 - Physics
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CBSE 9 - Physics
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Asked by mailtoparvathyprajith | 06 Feb, 2024, 09:00: PM
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CBSE 9 - Physics
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Asked by mailtoparvathyprajith | 06 Feb, 2024, 08:44: PM
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CBSE 9 - Physics
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Asked by mailtoparvathyprajith | 06 Feb, 2024, 08:24: PM
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CBSE 9 - Physics
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CBSE 9 - Physics
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Asked by mailtoparvathyprajith | 31 Jan, 2024, 06:55: PM
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