March 1, 2017

Homework Help: Physics

Posted by Sasha on Sunday, January 3, 2010 at 2:20pm.

I found the first three parts of the question but I can't figure out part d.

The instruments attached to a weather balloon in the figure below have a mass(m) of 5.5 kg. The balloon is released and exerts an upward force(F) of 109 N on the instruments.

(a) What is the acceleration of the balloon and instruments?

(b) After the balloon has accelerated for 10 s, the instruments are released. What is the velocity of the instruments at the moment of their release?
100.2 m/s

(c) What net force acts on the instruments after their release?

(d) When does the direction of the instrument's velocity first become downward?
This is the one I can't figure out

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