What is escape velocity for the sun?

What is drift velocity?

What is terminal velocity?

If the mass of a planet is 2 times that of earth and radius is 3 times that of earth ,then find the escape velocity for that planet.For earth ,escape velocity =11.2 km s^(-1)

An electron in a hydrogen atom in its ground state absorbs 1.5 times as much energy as the minimum required for it to escape from the atom. What is the velocity of the emitted electron?