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CALC A small object with mass m = 0.0900 kg moves along the +x-axis. The only force on the object is a conservative force that has the potential-energy function U(x) = αx2 + βx3 , where α = 2.00 J/m2 and β = 0.300 J/m3. The object is released from rest at small x When the object is at x = 4.00 m, what are its (a) speed and (b) acceleration (magnitude and direction)? (c) What is the maximum value of x reached by the object during its motion?
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