a mass of rocket is 102 kg is fired into the Earth surface so that it's just escape the influent of the Earth. calculate the velocity of which it escape where g=6.67*10^-11,R=6.4*10^6and mass of the Earth is 6.0 * 10^24​

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach