Escape Speed

Author:Jharkhand Board
11th Jharkhand Board
IMPORTANT

Important Questions on Escape Speed

MEDIUM
IMPORTANT

A spaceship is stationed on Mars. How much energy must be expended on the spaceship to launch it out of the solar system? Mass of the space ship=1000 kg; mass of the sun=2×1030 kg; mass of mars=6.4×1023 kg; radius of mars=3395 km; radius of the orbit of mars=2.28×108 km; G=6.67×10-11 Nm2kg-2.

MEDIUM
IMPORTANT

The escape speed of a projectile on the earth’s surface is 11.2 km s-1. A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets. (Find the value in kmps upto one decimal place)

EASY
IMPORTANT

Does the escape speed of a body from the earth depend on the mass of the body, the location from where it is projected, the direction of projection, the height of the location from where the body is launched?