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A small object with mass m = 0.0900 kg moves along the +x-axis. The only force on the object is a...

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= 9.50 J/m2 and β = 0.300 J/m3. The object is released from rest at small x.

A) When the object is at x = 4.00 m, what is its speed?


Express your answer with the appropriate units.


B) When the object is at x = 4.00 m, what is the magnitude of its acceleration?

D) What is the maximum value of x reached by the object during its motion?

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