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  • because it's got a displacement of 240 km
    that's why we have to use for a constant acceleration

    r= ut + 1/2at^2
    LOL!!
    nah i'v never really done a Q like this
    Do you have the answers ?
    or is this like your homework or something ?

    if it's not this
    it has something to do with vectors possibly
    Hey . I'll try to help , this question is really confusing...

    because the rocket is moving 1000m/s then like it fires out rockets and we don't know what speed those rockets are going at.

    Hmm , i'll tell you my attempt , but srsly this question is hard :D

    r = ut + 1/2at^2

    r = 240 km = 240000 m
    u = 1000m/s
    t = 5 mins = 300s
    a = ?

    240000 = 1000 x 300 + 1/2 x a x (300)^2
    240000 = 300000 + 45000a

    = - 6000 = 45000a

    a = -6000/45000

    a = -0.133m/s/s towards the star ...

    Oh man i'm sorry i'v never done a complex Question like this b4
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