in which of the following scenarios does acceleration occur?
a child gets on a bicycle and begins pedaling down the sidewalk.
b. awoman walks toward a grocery store then turns around and walks bac
c. a car moving up a road slows down and stops at a red light.
d. all of these

Agas initially at p1 = 1 bar and occupying a volume of 0.5 liter is compressed within a piston–cylinder assembly to a final pressure p2 = 4 bar. (a) if the relationship between pressure and volume during the compression is pv = constant, determine the volume, in liters, at a pressure of 3 bar. (b) repeat for a linear pressure–volume relationship between the same end states. reference

If 2 moles of co_2 at 2l and 500k are expanded reversibly to 20l, more work can be obtained from an adiabatic process than from an isothermal process. is the above statement true or false?

How does the motion of an airplane compare to the motion of a rocket ?