KE = 1/2 (mv^2).
(56,000 x 2) = 112,000, = mv^2.
(112,000/985 = v^2 of 113.7055838.
Sqrt = 10.66m/sec.
(10.66 x 3.6) = 38.376kph.
You want answer in kph, but the 10.66 is metres/sec. Multiply by 3,600 secs/hr., divide by 1,000.
Note the shortcut, just multiply 10.66 x 3.6 and that's kph.
You can also divide kph by 3.6, and that's metres/sec.
