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Actual Aircraft Types, Impact Speeds of Flights 11 and 175 and Kinetic Energy Impact Calculations
Flight 11 Impact Speed into North Tower at 8:46:
KE of Boeing 767 at 198 m/s**
(0.5) · (179,170 kg) · (198)2
= 89,585 · 39,204
= 3,512,090,340 Joules
Flight 175 Impact Speed into South Tower at 9:03:
KE of Boeing 767 at 243 m/s**
(0.5) · (179,170 kg) · (243)2
= 89,585 · 59,049
= 5,289,904,665 Joules*
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*270 m/s = 600 MPH.
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