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- initial velocity = 1000 m/s

- height from earth = 100 km

- total mass = 3000 kg

- rocket capabilities (thrust) = 100 kg/s at MACH 5

i was told that to use viscous and laminar drag as two options and to keep mass constant (to simplify things a little).

the space ship is under variable acceleration but constant gravitational pull.

it doesnt matter if up or down is negative or positive so long as the derivation and integration work.

*** the question is will the space ship have a safe landing plan? or will it be able to approach the ground with out crashing therefore when displacement = 100 000 m, velocity = 0****

can some one please help me? any help is greatly appreciated...