# B c fired bullet gets there rst dropped bullet gets

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: r force by choosing a specific location as the zero of the function. ∆U = U B − U A ≡ −WA→B U = −Wr →r + U o o Conservation of Mechanical Energy The mechanical energy of an object is defined to be the sum of its kinetic and potential energies. E Mechanical ≡ K + U The work-kinetic energy theorem can be reformulated as a conservation law. Whenever the work done by non-conservative forces is zero, the mechanical energy of that object is conserved. W Non −Conservative Forces = 0  ∆E Mechanical = 0 And which takes less &gt;me to get to the boKom? A.  sliding gets there sooner B.  falling gets there sooner C.  they're the same And which takes less &gt;me to get to the boKom? A.  sliding gets there sooner B.  falling gets there sooner C.  they're the same Which takes less &gt;me to get to the boKom? (Why the diﬀerence in these two cases?) N W W A.  B.  C.  sliding gets there sooner falling gets there sooner they're the same A.  B...
View Full Document

## This note was uploaded on 03/26/2014 for the course PHYSICS 101 taught by Professor Bennet during the Fall '08 term at Johns Hopkins.

Ask a homework question - tutors are online