So It's Back To First Principles (Part 2)

[kincses-zsolt]

@flamecensor

Also, graphing dots for bullet speeds was easy, but the curve variable seems to be retained, so I need to reset the calculator(not shown here) or else the downward curve becomes steeper with every calculation!

@greg_n
my calculation is here: but it is constant velocity approximation

@kincses-zsolt

can you check please

• Observer’s displacement from bullet trajectory: d
• shockwave propagation from bullet to observer: b = d v / c
• assuming the bullet distance from muzzle: a
• use law of cosine
• use trigonometric identity cos(90+a)=-sin(a)
• D2 = a2 + b2 + 2ab c/v
• timing: t1=a/v + b/c; t2=D/c

oops, forgotten the last one