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Question

An artificial is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hrs to revolve around the earth.

motion CBSE Class 9

August 25, 2024

Answer

Here,

r = 42250 km = 42250000 m

T = 24 h = 24 × 60 × 60 s

Using Speed, v = 2πr ÷ T

v = (2 × 3.14 × 42250000) ÷ (24 × 60 × 60) m/s

= 3070.9 m/s = 3.07 km/s

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