859
launch him anyway
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Thats inefficient, you dont need to cancel the angular momentum as there was no time limit on how long it takes rhe child to enter the sun and there also was not a specified required trajectory. The child can just spiral into the sun
Right, I wanted to ask: is that actually the minimum energy to make the child reach the sun? What's the minimum energy to launch something so it reaches the sun?
The speed will be related to escape speed of sun. Based on https://en.m.wikipedia.org/wiki/Escape_velocity It will be Vte which is 16.6 km/s (or Ve 42.1). So when object at earth orbit and has lower speed than 16.6 it can't keep the orbit and will slowly fall into sun.