When Amy Schumer talks about her vagina I totally lose my shit . <| sep |> Yeah I remember this summer when I gave up on this game the first time . I used up all my orbs to get summer swimsuit female characters , and spent 80 dollars and 10 rolls not even one 5 star . I got pissed off and deleted this game . Only two months later I came back and regretting quitting because I missed so many events . this game is toxic <| sep |> Tu m ' en voies ravi . L ' espace d ' un instant tout ce second degr que je lisais en toi , je pensais l ' avoir imagin . Quelle ne fut pas ma deception . Tout est bien qui fini bien . La beaut d ' internet <| sep |> Deltav is change of velocity acceleration . Specific impulse refers to the efficiency of the rocket engine how much thrust is produced in relation to the fuel burned . The 9 . 81 is a rough standin to account for the acceleration due to gravity what the rocket is primarily fighting against . Basically , the equation gives us a rough starting point for how powerful a rocket has to be in order to reach a desired trajectory . In order to reach the ISS , a rocket would have to provide at least 74 kms of deltav in order to reach the orbit of the ISS not counting many other factors such as a circularization burn , resistance due to drag , etc . Over 90 % of the weight of a rocket is fuel as a result . This explains why you hear astronauts talk about the strict weight limitations for personal effects when they go on a mission . Rockets tend to not have a lot of paint due to the fact that even in a thin layer , the weight of the paint adds up yet contributes very little to the function of the rocket .