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## Main Question or Discussion Point

My textbook source is:

Fundamentals of Physics, 6th edition, by Halliday, Resnick, Walker

According to Newton's well known 2nd Law of Motion:

F

In chapter 2, in the case of free fall, the F

where g = -9.8 m/s

However, in order to make a slighter more elaborate calculation, let us attempt include to incorporate air resistance, as in chapter 6:

If we have the following values to insert into the Drag equation:

Mass density of air = ρ = 1.29 kg / m

Object speed in m/s =

Drag coefficient = C

Effective Cross-sectional Area in m

The drag equation in chapter 6, section 3 appears to be:

F

As air resistance increases with

Then terminal velocity might be attained, and the object's free fall may cease to accelerate.

Terminal velocity v

F

(1/2) ρ

etcetera...

Is this correct? This is not a homework assignment question.

Fundamentals of Physics, 6th edition, by Halliday, Resnick, Walker

According to Newton's well known 2nd Law of Motion:

F

_{net}= maIn chapter 2, in the case of free fall, the F

_{grav}= mg,where g = -9.8 m/s

^{2}, assuming that movement along the axis of y is positive going upward from the Earth's surface.However, in order to make a slighter more elaborate calculation, let us attempt include to incorporate air resistance, as in chapter 6:

If we have the following values to insert into the Drag equation:

Mass density of air = ρ = 1.29 kg / m

^{3}Object speed in m/s =

*v*Drag coefficient = C

_{drag}= needs to be looked up or calculatedEffective Cross-sectional Area in m

^{2}=*A*The drag equation in chapter 6, section 3 appears to be:

F

_{drag}= (1/2) ρ*v*^{2}C_{drag}*A*As air resistance increases with

*v*^{2}, the F_{drag}reaches a value equal in magnitude and opposite in direction to F_{grav}.Then terminal velocity might be attained, and the object's free fall may cease to accelerate.

Terminal velocity v

_{terminal}can be solved for by calculating the case of F_{net}= 0 = F_{drag}+ F_{grav}F

_{drag}= -F_{grav}(1/2) ρ

*v*^{2}C_{drag}*A*= -mgetcetera...

Is this correct? This is not a homework assignment question.