using Homework Help I keep getting different answere for the same problem. I mea

Question

using Homework Help I keep getting different answere for the same problem. I mean using the same inputs should give the same outputs even if the methods are different so can some one please please show me the work and if I get two solution s that agree then OK then: this is the problem: A certain cablecar in San fransisco can stop in 10 sec upon the application of the brakes while traveling at full speed Upon seeing a dog ahead of the car the driver instantly applies the full brakes and reaches the point where the dog sat just as the dog jumped out of the way . at this point the brakes had been applied for 8sec. the car continues to roll an additional 2 sec for a distance of 4 meters . How far was the cable car from the dog when the driver started to brake

Explanation / Answer

0 = u + 2a -u*u = 8a 4a*a + 8a = 0 a = -2 u = 4 m/sec 4 = u -2(8) u =20 16 -400 =4S 4 -100 = S S = 96 m answer !!!!

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