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At what part of the trajectory does a projectile have maximum speed?
Wiki User
∙ 6y ago
The maximum speed of a fired projectile, unless fired downward in a vacuum, is the muzzle velocity - this is when the propulsive acceleration ceases. Ignoring air resistance, the projectile would maintain its horizontal velocity, while gravity would first reduce then restore the vertical component.
Terminal velocity, the maximum possible atmospheric speed, is determined by mass, gravity, air density, and projectile shape, as gravitic acceleration is slowed by air resistance.
Wiki User
∙ 6y ago
Wiki User
∙ 12y agoWell, let's see . . .
-- The horizontal component is either constant ... if you ignore air resistance ...
or decreasing, if you consider it.
-- The vertical component, under the influence of gravity, is either increasing
all the time ... if you ignore air resistance ... or increasing only for a while, if
you consider air resistance.
-- Either way, after a short time out of the muzzle, the resultant speed is
increasing, and continues to increase either from then on or at least for a
while.
So the projectile's maximum speed is when it hits the ground, and may have started
some time before that when it reached terminal velocity in the atmospheric soup.
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