What is the direction of areal velocity of the earth around the sun?

The motion of earth around the sun is-

What is the direction of velocity at any point on the path of an object?

Find the expression for escape velocity of earth.

How will you ‘weigh the sun’, that is estimate its mass? The mean orbital radius of the earth around the sun is 1.5 xx 10^8 km .

In the alongside figure a straight conductor B is carrying current in the vertical downward direction. What will be the direction of magnetic field lines around the conductor?

Name one factor on which the period of revolution of a planet around the sun depends?

Earth also moves in circular orbit around the sun once every year with an orbital radius of 1.5xx10^(11)m . What is the accerelation of the earth ( or any object on the surface of the earth) towards the centre of the sun? How does this acceleration compare with g = 9.8 m//s^(2) ?

What remains constant when the earth revolves around the sun?