What is the speed of the air relative to a person standing on the ground

The velocity of a curling stone is due east. what will be the direction of the momentum of the curling stone as it moves?

Modify the equation fδt=δ (mv) to find the force of friction.

Air initially at 0.75 bar, 1000 k, and occupying a volume of 0.12 m^3 undergoes two processes. process 1-2: the air is compressed isothermally until the volume is halved. process 2-3: the air undergoes a constant pressure process until the volume is halved again. assume ideal gas behavior. a) determine the mass of the air, in kg. b) the work and the heat transfer for each of the two processes, in kj. (100 kj = 1 bar . m^3)