Find the force applied to you by the rubber bands?

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Max CR
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Homework Statement



A giant rubber band is going to launch you straight upwards. Upon launch your acceleration is 15 m/s^2 upwards. If your mass is 70 kg, find the force applied to you by the rubber bands.

This is a copy word from word of the problem. Please be specific. I have a physics test tomorrow.

Thanks!


Homework Equations





The Attempt at a Solution



a = 15 m/s^2
M = 70 kg
F = ?

F = ma
F = (70 kg)(15 m/s^2) = 1050 N
 
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Max CR said:
F = ma
F = (70 kg)(15 m/s^2) = 1050 N
That's the net force on you during the acceleration, not the force from the rubber band.

Draw a free body diagram of you. What forces are acting? Which way do they act?
 
I do not know. I am looking but can't figure it out.