A lot depends on the initial velocity and angle of impact.
Considering that the earths atmosphere isn’t much more than 100km thick, and a meteor could in theory come in head-on with an initial velocity of 70km per second, there isn’t going to much time for it to slow down.
Based on some quick googling (not an expert in the related physics like some sibling commenters seem to be), earth’s orbital velocity around the sun is ~30km/s and the sun’s orbital velocity around the center of the galaxy is 250km/s
Air resistance is to first approximation quadratic with velocity. High initial velocities lead to very high braking force, so it wouldn't have 70 km/s for very long. Also see surrounding comments for more related physics.
Considering that the earths atmosphere isn’t much more than 100km thick, and a meteor could in theory come in head-on with an initial velocity of 70km per second, there isn’t going to much time for it to slow down.