Question

Upon its returm voyage from a space mission, the spacecraft has a velocity of 22200 km/h at point A, which is 7110 km from the center of the earth. Determine the velocity of the spacecraft when it reaches point 8, which is 6640 km from the center of the earth. The trajectory between these two points is outside the effect of the earth's atmosphere. The radius of the earth is 6371 km, and g 9.825 m/s2 on the surface of the earth. -to Answer: VB km/h the tolerance is +/-296

Answer 1

Qiven that Velocity of the supercaft at A is Distance from the centre ob earth to point A Let Ve be the ve lo cf ty of the Space Cyaft at B uwhich İs at a distance γΒ-6640km from cen entuc of the eas th qiven , Radi'us of the earth - 63 31lCh Accele ration duc to jravity, change in potential energy given b From work- £ner relation γβ