The velocity in the x direction matches the motion of the object. The object in the beginning of the motion has a varying x acceleration because it is in simple harmonic motion and changing direction. However when Cam leaves the swing the acceleration becomes more constant at about -2 m/s2. Although an ideal object in projectile motion would have an x acceleration of 0 we must take in to account air resistance with is likely creating a negative acceleration and slowing Cam down in the x direction.
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