Homework Help: physics

Posted by vishal vegad on Friday, February 15, 2013 at 5:46am.

An artificial sattelite as a mars of 600 kg and moving towards moon.calculate its kinetic energy and potential energy in mJ relative to the earth when it is 50 km from launching and moving at 2500 km/h take acceleration of earth gravitational field as 790 cm/s*s

physics - bobpursley, Friday, February 15, 2013 at 10:50am
KE=1/2 *600*v^2 convert 2500km/hr to m/s

Now on PE, I am troubled by your graviational field. You list it as constant, however, if it is relative to earth, that field changes nearer Earth, by a significant factor, so PE relative to Earth is more than a constant field would indicate.

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