An asteroid is moving directly towards the centre of the earth. When at a distance of 4R (R is the radius of the earth) from the earths centre, it has a speed of `2sqrt2` km/s. Neglecting the effect of earths atmosphere, what will be the speed of the asteroid when it hits the surface of the earth (escape velocity from the earth is 11.2 km/s)? Give your answer to the nearest integer in kilometer/s _________.

[" An asteroid is moving directly "],[" towards the centre of the earth."],[" When at a distance of "10R" ( "R" is the "],[" radius of the earth) from the earths "],[" centre,it has a speed of "12km/s" ."],[" Neglecting the effect of earths "],[" atmosphere,what will be the speed "],[" of the asteroid when it hits the "],[" surface of the earth (escape velocity "],[" from the earth is "11.2km/s" ).Give "],[" your answer to the nearest integer in "],[km/s" ................"]

The escape velocity from the surface of the earth is (where R_(E) is the radius of the earth )

An asteroid, headed directly toward Earth, has a speed of 12 km/s relative to the planet when the asteroid is 10 Earth radii from Earth's center. Neglecting the effects of Earth's atmosphere on the asteroid, find the asteroid's speed v_f when it reaches Earth's surface.

In the above question, escape speed from the centre of earth is :

The mass of the moon is 7//81 th of earth 's mass and its radius is 1//4 th that of the earth if the escape velocity from the earth surface is 11.2 kms^(-1) its value for the moon will be

The mass of the earth is 9 times that of the mars. The radius of the earth twice that of the mars. The escape velocity of the earth is 12km//s . The escape velocity on the mars is ........ km//s

The mass of Saturn is 95 times that of earth and radius is 9.5 times the radius of earth. What will be escape velocity on the surface of saturn if the escape velocity on earth's surface is 11.2 kms^(-1) ?

A projectile is fired vertically from the earth's surface with an initial speed of 10 km//s . Neglecting air drag, how high above the surface of earth will it go?