physic

A cheetah is crouched in ambush 20m to the east of an observers blind. At time t=0 the cheetah charges an aeroplane in a cleaning 50m east of the observer. The cheetah runs along the straight line.

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asked by helen
  1. Incomplete.

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    posted by Henry
  2. 20 m/s

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    posted by Ammar

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