Track III · five questions

Quiz · Energy

Closed notes, open head. 80% marks the track complete. Best so far: 0%.

1. 1 of 5

   A centripetal force on uniform circular motion does

   maximum worknegative workzero workwork equal to ½mv²

2. 2 of 5

   The work–energy theorem states that net work equals

   ΔPEΔKEΔE_thermalpower

3. 3 of 5

   SI unit of power

   joulenewtonwattpascal

4. 4 of 5

   A conservative force is one for which

   work depends on pathwork is always positivework between two points is path-independentfriction is an example

5. 5 of 5

   Efficiency of a real cyclic machine is

   always 1sometimes > 1 with gearsalways < 1undefined