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2007-09-25 09:47:08 · 2 answers · asked by Anonymous in Science & Mathematics Physics

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Wouldn't a rocket burning fuel at a constant rate give a constant accelerations. This one is burning fuel at an increasing rate.
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2007-09-25 09:54:42 · update #1

2 answers

Like the fellow above me, no, it would not give constant jerk, because (presumably) the amount of fuel burned per second is the same.

Therefore, dp/dt is constant, so force is constant, and thus acceleration is constant.

Make dp/dt=b*t, where b is some constant, and t is time.

That is to say, make the amount of fuel you burn time dependent, and then you will have constant jerk.

Edit:

You say that it is burning at an increasing rate, so yes, it will give constant jerk (provided you make the rate linear). If the rate is nonlinear, then there will be jerk, but it won't be constant. To wit: dp/dt will go more like 1/2b*t^2 if jerk were b*t instead of just a constant b.

2007-09-25 09:56:21 · answer #1 · answered by David Z 3 · 1 0

No. Just a constant acceleration (albeit a large one).

Doug

2007-09-25 16:53:35 · answer #2 · answered by doug_donaghue 7 · 1 0

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