Question

]
Assume that the earth goes round the sun in a circular orbit with a constant speed of 30 km/s. Then
a) The average velocity of the earth from 1st Jan 1990 to 306 June, 1990 is zero
[
b) The average speed from 1st Jan, 90 to 31st Dec, 90 is zero
) The instantaneous speed at June 296 is 30 kms!
d) all of the above
At​

Answer 1

Explanation:

the instantaneous speed at june 296 is 30 kms