Question #4565

Assuming that Earth has a circular orbit with a radius of 1.496 x 10^11 m, what is
a) the average speed (in m/s) o fEarth for one full orbit?
b) the average velocity of Earth for one full orbit?

Expert's answer

We are given

a) Average speed defined the length of the path traveled until time t by the time.

length of the path is length of the orbit. Length of circular orbit relates with its radius as:

One full orbit Earth goes for one year. Hence:

Thus

Velocity is the measurement of the rate and direction of change in the position of an object. It is a vector physical quantity; both magnitude and direction are required to define it.

The scalar absolute value (magnitude) of velocity is speed.

b) The average velocity v of an object moving through a displacement delta x during a time interval (Δt) is described by the formula:

After rounding one full orbit Earth is back at its start position, so displacement is zero. Thus:

__Answer:__ average velocity of Earth for one full orbit

a) Average speed defined the length of the path traveled until time t by the time.

length of the path is length of the orbit. Length of circular orbit relates with its radius as:

One full orbit Earth goes for one year. Hence:

Thus

Velocity is the measurement of the rate and direction of change in the position of an object. It is a vector physical quantity; both magnitude and direction are required to define it.

The scalar absolute value (magnitude) of velocity is speed.

b) The average velocity v of an object moving through a displacement delta x during a time interval (Δt) is described by the formula:

After rounding one full orbit Earth is back at its start position, so displacement is zero. Thus:

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