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Physics(IMPORTANT)

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A meteorite of mass 1*10^4kg is approaching head-on a planet of mass 5*10^29kg and radius 5*10^4km. Assume that the meteorite is initially at a very large distance from the planet where it has a speed 3*10^2km/s. Take 6.67*10^-11.

Determine the speed of the meteorite (in m/s) just before it hits the surface of the planet. (The planet has no atmosphere, so we can neglect all friction before impact)

v=

  • Physics(IMPORTANT) -

    34534563456

  • Physics(IMPORTANT) -

    please tell the formuka

  • Physics(IMPORTANT) -

    I know its the initial KE+initial PE=final KE... but how do we calculate the initial PE? GMm/R.... but what R do we sue ehre? Its beens tated that the meteorite is already really far away from the planet initially..???

  • Physics(IMPORTANT) -

    Given that its really far away from the planet you can assume that PE = 0

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