67.A rocket is fired vertically from mars surface with 2km/sec.if 20% of its initial kinetic energy is lost due to the martian atmospheric resistance.then the rocket reaches maximum height that the rocket reaches is (mass of mars =6.4x10power of 23kg;radius of mars =3400km)
Kindly refer to the link given below for an answer to a similar query :
https://www.meritnation.com/ask-answer/question/a-rocket-is-fired-vertically-from-the-surfa/gravitation/6328216
https://www.meritnation.com/ask-answer/question/a-rocket-is-fired-vertically-from-the-surfa/gravitation/6328216