Comments by "ViceCoin" (@ViceCoin) on "Russia tests Hypersonic bullet, speed of more that 1,500 m/s. Can reach targets instantly." video.

  1. 1500 m/s is Mach 1.5, supersonic. Hypersonic speed is 5000m/s.
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  2.  @johnjohnson8818  Mach 5 is hypersonic (at high altitude). Mach 1 is 340m/s at SEA LEVEL.
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