Q1: The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator

ANS:A - eastward

When a satellite is launched from the equator eastward, it receives an initial velocity due to the rotation of the Earth. This initial velocity is in the same direction as the Earth's rotation. The rotational velocity of the Earth at the equator is highest due to its maximum radius. This velocity is approximately 1670 kilometers per hour (or about 465 meters per second). Therefore, when a satellite is launched from the equator eastward, it inherits the Earth's rotational velocity in addition to the velocity imparted by its own propulsion system. In this case, the increase in velocity of the satellite due to its launch from the equator eastward would be eastward, as it adds to the eastward velocity of the Earth's rotation.