Question
Assume that the earth goes round the sun in a circular orbit with a constant speed of 30 km/s. Then,
Assume that the earth goes round the sun in a circular orbit with a constant speed of 30 km/s. Then,
Answer: Option D
:
D
(a) we can see there is a displacement from A to B .∴ average velocity cannot be zero
(b) aavg=→v2−→v1t=30^i−(−30^i)6months=606×30×3600km/s2 which is already not 60 km/s2
(c) average speed is not zero as total distance covered is not zero
(d) The instantaneous acceleration will point to the sun as the above described motion is uniform circular motion with sun at the centre of the circular path.
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:
D
(a) we can see there is a displacement from A to B .∴ average velocity cannot be zero
(b) aavg=→v2−→v1t=30^i−(−30^i)6months=606×30×3600km/s2 which is already not 60 km/s2
(c) average speed is not zero as total distance covered is not zero
(d) The instantaneous acceleration will point to the sun as the above described motion is uniform circular motion with sun at the centre of the circular path.
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