Physics, 11.11.2019 01:31, almaga1979orfvwo
Acar starts from rest at a stop sign. it accelerates at 4.0 m/s2 for 3 seconds, coasts for 4 s, and then slows down at a rate of 3.0 m/s2 for the next stop sign. how far apart are the stop signs?
Answers: 2
Physics, 21.06.2019 17:20, buiratsamah
You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 1515 lb and was traveling eastward. car b weighs 1125 lb and was traveling westward at 44.0 mph. the cars locked bumpers and slid eastward with their wheels locked for 22.5 ft before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750 . how fast (in miles per hour) was car a traveling just before the collision? (this problem uses english units because they would be used in a u. s. legal proceeding.)
Answers: 3
Physics, 22.06.2019 15:20, alissalhenry
Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.
Answers: 3
Acar starts from rest at a stop sign. it accelerates at 4.0 m/s2 for 3 seconds, coasts for 4 s, and...
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