The phrase "a velocity at which" is correct and usable in written English.
It can be used when discussing the speed of an object or phenomenon in relation to a specific context or condition.
Example: "The car reached a velocity at which it could safely navigate the sharp turn."
Alternatives: "a speed at which" or "a rate at which".
The projectile/armor interaction simulation results show that both armor architectures yield a minimal (∼6%) increase in the ballistic-protection as measured by the armor V50, a velocity at which the probability of armor penetration by a given fragment is 50%.
Once in gallop, the speed was increased up to a velocity at which the rat could not stay in the front of the treadmill.The slope of the treadmill was progressively increased throughout the 6 weeks of training, starting at 10% and rising to 40%.
This will be a velocity at which the weight of the aircraft and the load equals the lift generated by the velocity.
If the predicted velocity v(x) exceeds a pre-calculated maximum velocity v max x) the vehicle will reach a critical velocity at which a brake intervention is likely even in coasting mode.
The conveying characteristics tell a designer what the minimum conveying velocity for the material is, whether there is an optimum velocity at which the material can be conveyed, and what pipeline diameter and air mover rating is required for a given material flow rate and conveying distance.
Results are presented for a wide range of material parameters, including noteworthy observations of a characteristic crack velocity at which the macroscopic toughness becomes independent of the material rate sensitivity.
During double contact, the total horizontal force remains close to zero, implying a nearly constant velocity, at which the body moves backward (velocity is negative) (Fig. 3c).
The "escape velocity" of a body is the velocity at which an object would have to travel to escape the gravitational pull of the body and continue flying out to infinity.
Importantly, there is an optimum withdrawing velocity at which the largest aspect ratio of columnar grains can be obtained.
Water wetting in a hydrophobic pipe requires a sufficient low flow velocity at which local droplet accumulation and coalescence becomes the dominant segregation mechanism.
Permeation coefficient is an important parameter in skin diffusion and penetration; it describes the velocity at which a permeant travels across a membrane.
