Posted by **Monet Nguyen** on Wednesday, September 26, 2012 at 7:44pm.

I am having problem with this one physic problem. I am not sure where to start can someone help me? Thank You!

A 15.0 kg box falls out of an Jet at an altitude of 3000 meters. It reaches a terminal speed of 50 meters per second in 3.20 seconds. Calculate the force of air friction on the package after it reaches terminal speed.

- College Physic -
**bobpursley**, Wednesday, September 26, 2012 at 7:47pm
you need the velocity of the box, I think. But the initial velocity had a very fast horizontal component, and likely the box slowed to terminal speed, and gravity had no effect on it attaining terminal speed.

This problem cannot be solved with the information given, as the velocity after 3.2 seconds is not possible to determine, not knowing the initial box: it was not zero.

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