9mm (usually called 9mm Luger or 9mm Parabellum) almost always has a higher muzzle velocity than the 380 ACP (also called the 9mm short, 9mm Kurtz, and 9mm Corto). The two bullets are essentially the same diameter however the 9mm Parabellum is almost always a heavier bullet than the 380 ACP with a larger powder charge and a significantly higher chamber pressure.
.30 vs .355
.30 vs. .355
Weapon loads at the breech vs. the muzzle.
Weapon loads at the breech vs. the muzzle.
No, acceleration is the rate of change of velocity with respect to time. It is the derivative of the velocity function, not the slope of the velocity vs. time graph. The slope of the velocity vs. time graph represents the rate of change of velocity, not acceleration.
Your acceleration vs. Time graph is the slope of your velocity vs. time graph
No, displacement is the area under the velocity vs. time graph. The slope of a velocity vs. time graph represents acceleration.
less power vs more power all else being equal.
.355 vs .40
Yes!
Of course a 45 is more powerful, but the 9mm has the advantage of speed and a larger chamber. If you only get one shot, pick 44. Multipule. Then pick 9mm
Acceleration can be found by computing the slope of a velocity vs. time graph. Acceleration is the rate of change of velocity over time, so the slope of a velocity vs. time graph represents this change in velocity.