Mechanical energy is the difference between the kinetic and potential energies of an object. true or false?

Which material produces static charge when rubbed?

Apackage of supplies is dropped from a plane, and one second later a second package is dropped. neglecting air resistance, the relative velocity of the 1st package viewed from the second will 56) a) increase. b) be constant. c) be zero. d) depend upon their weight. e) decrease

Which of the following are appropriate acceleration units?