PhysicsMedium159×since 2002Q7220Escape velocity of a body from earth is 11.2 km/s11.2 \mathrm{~km} / \mathrm{s}11.2 km/s. If the radius of a planet be onethird the radius of earth and mass be one-sixth that of earth, the escape velocity from the planet is :A7.9 km/sB8.4 km/sC4.2 km/sD11.2 km/sCheck answerSkip