Physics, 17.09.2019 23:00 markusfloyd9192
Aperson driving her car at 43 km/h approaches an intersection just as the traffic light turns yellow. she knows that the yellow light lasts only 2.0 s before turning to red, and she is 30 m away from the near side of the intersection (fig. 2-29). the intersection is 15 m wide. her car's maximum deceleration is -5.4 m/s2, whereas it can accelerate from 43 km/h to 70 km/h in 8.1 s. ignore the length of her car and her reaction time. figure 2-29if she hits the brakes, how far will she travel before stopping?
if she hits the gas instead, how far will she travel before the light turns red? m should she try to stop, or should she speed up to cross the intersection before the light turns red?
Answers: 1
Physics, 22.06.2019 02:30
Agas contained within a piston-cylinder assembly undergoes three processes in series: process 1ïƒ 2: compression with pv= constant from 1 bar and 1 liter to 4 bar. process 2ïƒ 3: constant pressure expansion to 1 liter. process 3ïƒ 1: constant volume calculate the pressure and volume at each state, and sketch the processes on a p-vdiagram labeled with pressure and volume values at each numbered stat
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Physics, 22.06.2019 04:30
You are traveling in a car going at a constant speed of 100km/h down a long, straight highway. you pass another car going in the same direction which is traveling at a constant speed of 80km/h. as measured from your car's reference frame this other car is traveling at −20km/h. what is the acceleration of your car as measured from the other car's reference frame? what is the acceleration of the other car as measured from your car's reference frame?
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Physics, 22.06.2019 04:30
In a system, when potential energy decreases, then entropy also decreases. true false
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Aperson driving her car at 43 km/h approaches an intersection just as the traffic light turns yellow...
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