Posted by **CJ** on Sunday, January 31, 2010 at 10:46am.

I'm having trouble understanding which formula to use to answer this question. What is the apparent weight of an astronaut weighing 77kg shortly after blasting off in a roacket at an upward acceleration of 80/meters per second squared? I know he/she will feel about 3 times heavier and I know the answer will be in newtons, but what formula do I use?

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