Question

2. A typical jetliner lands at a speed of 1.60x10² mi/h and decelerates at the rate of (10.0 mi/h)/s. If the plane travels at a constant speed of 1.60x102 mi/h for 1.00 s after landing before applying the brakes, what is the total displacement of the aircraft between touchdown on the runway and coming to rest?

Answer 1

I milh = 0.44704 m/s i t=15 Vo=160 milbe 2 x=0 da dovo i6omin u de mis too _siz di i Distance Digronce travelled trovelled While Braking of Constort Speed Given Vo=16080-4 4704 = 71-5264 m/s t = 15 Distance travelled at constant speed di = Vot = 71.5264*1 = 71.5264 m During Braking a =-1080.44704 =-4.4704 mis from 2 = V0 +zod 0 - 71.52642+2 1-4.4704) dz da = 572.2112 m. Total Distance travelled is D=d,+ d2 = 1643.74 m