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the box of negligible size is sliding down along a curved path defined by the parabola...

the box of negligible size is sliding down along a curved path defined by the parabola y=1.800x^2 when it is at A(xa=1.550m,ya=4.325m),the speed is 7.450m/s and the increase in speed is dvb/dt=5.400m/s.Determine the magnitude of the acceleration of the box at this instant

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