Step-by-step explanation:
His POTENTIAL energy ( mgh) would be entirely converted to Kinetic energy (1/2 m v^2) just before SPLAT ! ( ignoring air friction)
mgh = 1/2 m v^2
gh = 1/2 v^2
v = sqrt (2 * g * h) = sqrt ( 2* 9.81 * 2100) = ~ 203 m/s
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