Why are space rockets usually launched from west to east ?

Why are space rockets usually launched from west to east ? Why it is more advantageous to launch rockets in the equatorial plane.

ANS:

We know that the earth rotates about it axis from west to east. So any point on earth's surface has linear velocity from west to east. When a rocket is launched from west to east, the linear velocity of earth is added to the launching velocity of rocket.

Hence rockets are usually launched from west to east. At equator, the linear velocity of earth's rotation is maximum and hence it is advantageous to launch rockets from west to east in equatorial plane.

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