The box of negligible size is sliding down along a curved path defined by the parabola y=0.5 x². When it is at A (XA=2.5 m), the speed is V=8 m/s and the increase in speed is dv/dt=4 m/s². Determine the magnitude of the acceleration of the box at this instant. y y =0.5x² 2.5 m
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