Ahockey puck of mass 0.16 kg is slapped so that its velocity is 50 m/sec. it slides 40 meters across the ice before coming to rest. how much work is done by friction on the puck? a. +4 j b. –60 j c. –200 j d. –340 j

The average atmospheric pressure on earth is approximated as a function of altitude by the relation patm = 101.325 (1 − 0.02256z)5.256, where patm is the atmospheric pressure in kpa, and z is the altitude in km with z = 0 at sea level. determine the approximate atmospheric pressures at atlanta (z = 306 m), denver (z = 1610 m), mexico city (z = 2309 m), and the top of mount everest (z = 8848 m).