The force on a particle of mass 2.0 kg varies with position according to F(x) = −3.0x2 (x in meters, F(x) in newtons). The particle's speed at x = 3.0 m  is 5.5 m/s. Find the particle's speed (in m/s) at x = 2.0 m, using the origin as the reference point. Find the particle's speed (in m/s) at  = 2.0 m, using x = 5.0 mas the reference point.

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