Cars A and B are traveling in adjacent highway lanes and at t= 0s have the position and velocity shown. If va = 13.2 km/h , vg = 29 km/h , 5 = 915 m, and knowing that car A has a constant acceleration of 0.68 m/s? and that B has a constant deceleration of 0.22 m/s², determine the relative position of car B with respect to car A at the moment the velocity of car B is zero. Round off your final answer to three decimal places. 1(1).png VB VA

Your answer is partially correct. Airplane A is flying horizontally with a speed of 218 km/h which is increasing at the rate of 4.8 km/h each second and is towing the glider B, which is gaining altitude. If the tow cable has a length r = 80 m, and the cable is unreeling at the constant rate r = 1.8 m/s while 0 = 19° is kept constant, determine the magnitudes of the velocity v and acceleration a of the glider. VA A Answers: V = a = i 58.8 1.33 km/h m/s²

Q3 A car A is travelling along a straight path, while a lorry B is travelling along a circular path having a radius of curvature of 200 m as shown in Figure Q3. At the instant shown, car A travel at the velocity of (156) km/h while lorry B travel at the velocity of 80 km/h. Also at this instant, car A has an increase velocity of 7000 km/h? and lorry B has a decrease velocity of 4500 km/h?. The angle between straight path of car A and the horizontal line is 0=65°. (a) Calculate the magnitude and direction of velocity of lorry B with respect to car A. (b) Determine the magnitude and direction of acceleration of lorry B as measured by the driver of car A. A vr (150+ X)km/h vg- 80 km/h a = 7000 km/ h? B ag = 4500 km/ h² | Figure Q3

Car B is traveling a distance d ahead of car A. Both cars are traveling at 60 ft/s when the driver of B suddenly applies the brakes, causing his car to decelerate at 8 ft/s2 . It takes the driver of car A 0.75 s to react (this is the normal reaction time for drivers). When he applies his brakes, he decelerates at 15 ft/s2.Determine the minimum distance d between the cars so as to avoid a collision.