Question

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Answer 1

The acceleration which is gained by an object because of the gravitational force is called its acceleration due to gravity.

i)In combination, the equatorial bulge and the effects of the surface centrifugal force due to rotation mean that sea-level gravity increases from about 9.780 m/s2 at the Equator to about 9.832 m/s2 at the poles, so an object will weigh approximately 0.5% more at the poles than at the Equator.

ii)Near Earth's surface, gravitational acceleration is approximately 9.8 m/s2, which means that, ignoring the effects of air resistance, the speed of an object falling freely will increase by about 9.8 metres per second every second.

iii)At the surface of the Earth, the acceleration due to gravity is roughly 9.8 m/s2.