4/14/09
Post date: Apr 14, 2009 4:24:14 PM
Bell Ringer: Which is more important in a machine, a high mechanical advantage or a high efficiency? Why?
MA and Efficiency Practice - due Wednesday
Notes on potential and kinetic energy
Kinetic energy
Energy of motion
Depends on mass and velocity of object
KE = 1/2*m*v^2
Potential energy
Energy of position, energy of height
Depends on mass, gravity, and height
PE = m*g*h
Pages 221-224: 2, 3, 5, 7 Due Thursday