Assuming it takes about 1.5 s for a driver having 0.02% alcohol in his/her system to react to a situation to avoid a collision. if such driver is traveling on a straight road at 50 mph, and the vehicle can decelerate at 2.5 ft/s2. determine the shortest stopping distance from the moment the driver see a pedestrian [hints: (a) convert miles per hour (mph) to ft/s.; (b) know that at stopping distance, final velocity is zero; (c) obtain initial distance before reaction].

Ahot wire operates at a temperature of 200°c while the air temperature is 20°c. the hot wire element is a tungsten wire of 5 um diameter and 2 mm in length. plot using excel current, heat transfer and heat generated by the wire for air velocity varying from 1-10 m/s in steps of lm/s? matlab the sensor voltage output, resistance, or assume nu 0.989 re033pr13 take air properties at tr (200°c20°c)/2 = 110°c properties of tungsten: c 0.13 kj/kg.k 3 p 19250 kg/m k (thermal conductivity) = 174 w/m.k