QuestionTextbook Sections 7.5 and 7.6 Homework Mini Quiz POSSIBLE POINTS: 2.5
Which one of these statements about Work and Energy is incorrect? The work done on an object by a constant force $F$ at an angle $\theta$ of the object's displacement $d$ is $W=F d \cos \theta$ The work-energy theorem for an object states that the net work on an object is equal to the object's change in kinetic energy $\mathrm{W}_{\text {net }}=\Delta \mathrm{K}$ The work done on an object by a constant force $F$ in the direction of the object's displacement $d$ is $\mathrm{W}=\mathrm{Fd}$ The kinetic energy of an object is $\mathrm{K}=1 / 2 \mathrm{mv}{ }^{2}$ $\qquad$ The spring potential energy of a spring stretched so that its total length is x is $U_{S}=1 / 2 k x^{2}$ 9 $8^{\circ} \mathrm{F}$ Q Search 4. $\square$ 2