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An 85 kg skydiver jumps from a stationary helicopter
that is 5.5 km above the ground. After 55 s of free fall,
the skydiver's velocity can be described as:
v = (6.4 m/s) + ( 60 m/s ) ŷ + ( 4.3 m/s ) 2
What is the kinetic energy of the skydiver at this time?
O 8.5x 105 J
O 4.5x 10 J
O 6.5x 10 J
O 1.6× 10° J

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