Not astrophysicist but here's a article from the Lunar and Planetary institute about impact speeds from astrological objects https://www.lpi.usra.edu/exploratio

Not astrophysicist but here's a article from the Lunar and Planetary institute about impact speeds from astrological objects https://www.lpi.usra.edu/exploration/training/illustrations/craterMechanics/#:~:text=Asteroids%2C%20the%20most%20common%20type,that%20average%2053%20km%2Fs https://www.lpi.usra.edu/exploration/training/illustrations/.... Looks like there is not a significant amount of variance in asteroid speed so mass would be the biggest deciding factor.