All Ballistic missiles are hypersonic, reentry speeds depend on how lofted the ballistic arc , 1000km range missile would be going at 2350-2700m/s on terminal stage , you are seeing missiles deaccelerting in dense atmosphere from mach7-8 till they hit the ground
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Hypersonic weapons that are all the rage right now are often misunderstood and confused with balistic missiles that travel at hypersonic speeds , per modern definition Hypersonic weapons do not follow a ballistic trajectory and can maneuver en route to their target while moving at hypersonic speeds
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