A rock on the surface of Mars is projected vertically upwards with an initial speed of 9.4 ms⁻¹. The rock rises to a height of 12 m above the surface. Assume there is no atmosphere on Mars. What is the acceleration of free fall near the surface of Mars?
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The total initial energy of the rocket and the planet system is the sum of the kinetic energy of the rocket and the gravitational energy of the system.
whereas the final energy will be the gravitational energy at a height H from the surface
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