noun
initial velocity
Physics term for the velocity of an object at the start of observation or motion. Often used in mechanics and ballistics.
弾丸の初速は毎秒800メートルに達する。
The initial velocity of the bullet reaches 800 meters per second.
この実験では、物体の初速をゼロと仮定する。
In this experiment, we assume the initial velocity of the object is zero.