Delivery Systems Module


  1. An ICBM reenters the earth's atmosphere at Mach 25. This means that it is traveling 25 times the speed of sound at sea level (Mach 1), which is about 1100 ft/s. What is the velocity of the missile in miles per hour?

    25 Mach x (1100 ft/s per mach) = 27,500 ft/s
    27,500 ft/s x 3,600 s/hr x 1/5,280 mi/ft = 18,750 mi/hr

  2. Define CEP (Circular Error Probable).

    The Circular Error Probable is a measurement of the radius of a circle around a target that 50% of the missiles will hit.

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