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The motion of a 1.00-kg box along the x-axis is described by the function x(t)=…

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Wize University Physics Textbook (Master) > Work and Energy

Power

3 Activities

The motion of a 1.00-kg box along the x-axis is described by the function x(t)=2.0−t2+0.5t3x\left(t\right)=2.0-t^2+0.5t^3. Which choice correctly represents the power delivered to the box as function of time?

A) P(t)=4t−9t2+4.5t3P\left(t\right)=4t-9t^2+4.5t^3 B) P(t)=1.5t−5t2+3t3P\left(t\right)=1.5t-5t^2+3t^3
C) P(t)=−4t−3t2−4.5t3P\left(t\right)=-4t-3t^2-4.5t^3 D) P(t)=4+3t2+4.5t3P\left(t\right)=4+3t^2+4.5t^3



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