need help wit this people PLZ

ok i have physics hw. and i am not able to solve this. PLZ help.

>>>>>> For the intercontinental ballistic missile to have a range of 18000Km, what must be the speed Vo of the missile at the end of acceleration phase? Take the distance of the acceleration phase, called the boost time, as negligible compared to the travel time. Answer in units of Km/S


Thanks i only have till 10:00 PM EST till i have to submit. Thanks :) :) :) :) :)

wow, that's pretty hard, i took phsyics last year, but i cant remember much to help you with this question. I'm sorry 😭 😭