15 to 25km/hr is a running speed of human, probably you meant 15 to 25 km/s here (actually, some meteorites hit atmosphere >70km/s). Seems like they decelerate pretty fast after that[0]:

"At some point, usually between 15 to 20 km (9-12 miles or 48,000-63,000 feet) altitude, the meteoroid remnants will decelerate to the point that the ablation process stops, and visible light is no longer generated. This occurs at a speed of about 2-4 km/sec (4500-9000 mph). From that point onward, the stones will rapidly decelerate further until they are falling at their terminal velocity, which will generally be somewhere between 0.1 and 0.2 km/sec (200 mph to 400 mph). Moving at these rapid speeds, the meteorite(s) will be essentially invisible during this final “dark flight” portion of their fall."

0. http://www.amsmeteors.org/fireballs/faqf/