Air Resistance and Gravitational Force

AI Thread Summary
When jumping out of a plane, a person accelerates downward until reaching a constant velocity due to air resistance. At this point, the force of air resistance equals the gravitational force acting on the person. This balance results in zero net force and zero acceleration. Therefore, the magnitude of the wind resistance force is equal to the gravitational force. The discussion confirms that at constant velocity, the forces are in equilibrium.
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If you jumped out a plane, you would begin speeding up as you fall downward. Eventually, due to wind resistance, your velocity would become constant with time. After this occurs, the wind resistance force’s magnitude is

a.much smaller that the gravitational force acting on you.
b.slightly smaller that the force of gravity acting on you.
c.greater than the force of gravity acting on you
d.equal to the force of gravity acting on you.

Is it equal to the force of gravity? If there is constant velocity, then acceleration is 0. The sum of the forces would be equal to 0. In the vertical direction, F_R – F_G = 0. F_R = F_G?

Thanks.
 
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Sounds good, yes.
 
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