The bulk of the motion actually comes from the Earth's orbital motion, 30 km/s (18.5 miles per second).
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"The velocities of meteors result from the movement of the Earth around the Sun at about 30 km/s (18.5 miles per second),[9] the orbital speeds of meteoroids, and the gravitational attraction of the Earth." (Quote from Wikipedia)
Most meteoroids are debris that is in Earth's path as we orbits the Sun. We slam into them. There is some increase in velocity as they are accelerated by our gravity, but not much. Some few meteoroids will have a velocity towards earth, but most of the debris/meteoroids has an angular velocity around our sun that's generally in the same direction as earths (we catch up to them). They will usually be striking the earths atmosphere at less than 18.5 miles per second.
Most meteoroids are debris that is in Earth's path as we orbits the Sun. We slam into them. There is some increase in velocity as they are accelerated by our gravity, but not much. Some few meteoroids will have a velocity towards earth, but most of the debris/meteoroids has an angular velocity around our sun that's generally in the same direction as earths (we catch up to them). They will usually be striking the earths atmosphere at less than 18.5 miles per second.