I need to catch up on late work

The transfer of heat through the movement of a gas or liquid a. convection b. conduction c. radiation

The act of moving from one place to another. a. locomotor b. aerobic c. stationary d. static

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.