Asked by beavis
A rocket has a per-ignition mass of 1100kgs-1 producing a thrust of 10000N. How long after ignition of the fuel will the rocket lift off?
also explain how is it possible for a rocket to accelerate in space.
(i cant work it outt. i know it involves the rocket thrust equation some how, the newtons 2nd law and suvat's..) thank you
also explain how is it possible for a rocket to accelerate in space.
(i cant work it outt. i know it involves the rocket thrust equation some how, the newtons 2nd law and suvat's..) thank you
Answers
Answered by
drwls
You must have misspelled and omitted something.
I assume you mean pre-ignition mass, not per-ignition mass, which makes no sense.
If so, what is the pre-ignition mass? The number you have provided is a mass flow RATE.
The rocket lifts off then the trust equals the weight. Use the initial mass and the mass flow rate to figure out when that happens.
I assume you mean pre-ignition mass, not per-ignition mass, which makes no sense.
If so, what is the pre-ignition mass? The number you have provided is a mass flow RATE.
The rocket lifts off then the trust equals the weight. Use the initial mass and the mass flow rate to figure out when that happens.
Answered by
beavis
i haveeee!! ive posted the right question again please look it up again if you have time :(
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