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needhelp83
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A Saturn V rocket has a mass of 2.75 x 106 kg and exerts a force of 3.3 x 107 N on the gases it expels. Determine:
a) the initial vertical acceleration of the rocket
b) its velocity after 8 s
c) how long it takes to reach an altitude of 9500 m.
Ignore mass of gas expelled and assume g remains constant
a)Fnet=Fengine-Fgravity
Fengine=Fnet+Fgravity
Fengine=m(a+g)
a=F/m-g=(3.3*10^7 N/2.75*10^6 kg) - 9.8=2.2m/s^2
b) Not sure how to do
c) Not sure how to do
Any help?
a) the initial vertical acceleration of the rocket
b) its velocity after 8 s
c) how long it takes to reach an altitude of 9500 m.
Ignore mass of gas expelled and assume g remains constant
a)Fnet=Fengine-Fgravity
Fengine=Fnet+Fgravity
Fengine=m(a+g)
a=F/m-g=(3.3*10^7 N/2.75*10^6 kg) - 9.8=2.2m/s^2
b) Not sure how to do
c) Not sure how to do
Any help?