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Car A is parked along the northbound lane of a highway, and car B is traveling in the southbound lane at a constant speed of 60 mi/h. At
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Vector Mechanics for Engineers: Dynamics
- Cars A and B are traveling in adjacent highway lanes and at t = 0s have the position and velocity shown. If va = 12.5 km/h , va = 25.4 km/h , S = 615 m, and knowing that car A has a constant acceleration of 0.69 m/s and that B has a constant deceleration of 0.27 m/s?, determine the relative velocity of car B with respect to car A at the moment car A overtake car B. Round off your final answer to three decimal places. 1(1)-png VB VA B A Sarrow_forwardCars A and B are traveling in adjacent highway lanes and at t=0 s have the position and velocity shown. If VA = 13.6 km/h, vg = 28.2 km/h, 5 = 898 m, and knowing that car A has a constant acceleration of 0.66 m/s² and that B has a constant deceleration of 0.28 m/s², determine the relative velocity of car B with respect to car A at the moment car A overtake car B. Round off your final answer to three VB decimal places. VA B A S Oarrow_forwardCars A and B are traveling in adjacent highway lanes and at t = 0s have the position and velocity shown. If va = 11.9 km/h, vg = 29.8 km/h, 5= 968 m, and knowing that car A has a constant acceleration of 0.62 m/s? and that B has a constant deceleration of 0.28 m/s?, determine the relative velocity of car B with respect to car A at the moment car A overtake car B. Round off your final answer to three decimal places. 1(1).png VB VA A Sarrow_forward
- To study the performance of a race car, a high-speed camera is positioned at point A. The camera is mounted on a mechanism which permits it to record the motion of the car as the car travels on straightaway BC. It took 0.5 s for the car to travel from the position e = 60° to the position e = 35°. Knowing that b= 26 m, determine the average speed of the car during the 0.5-s interval. B The average speed of the car during the 0.5-s interval is km/h.arrow_forwardTo study the performance of a race car, a high-speed camera is positioned at point A. The camera is mounted on a mechanism which permits it to record the motion of the car as the car travels on straightaway BC. It took 0.5 s for the car to travel from the position θ = 60° to the position θ = 35°. Knowing that b = 24 m, determine the average speed of the car during the 0.5-s interval. The average speed of the car during the 0.5-s interval is ______ km/h.arrow_forwardIn a boat race, boat A leads boat B by 120 ft and both boats are traveling at a constant speed of 120 mi/h. At t = 0, the boats accelerate at constant rates. Knowing that when B passes A, t = 8 s and vA 133 mi/h, determine the acceleration of B.arrow_forward
- Cars A and B are traveling in adjacent highway lanes and at t = 0s have the position and velocity shown. If va = 14 km/h. vg = 25 km/h. 5 = 979 m, and knowing that car A has a constant acceleration of 0.67 m/s? and that B has a constant deceleration of 0.23 m/s?, 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 ... VA VB Sarrow_forwardAn aircraft P is flying along a circular path in a vertical plane, and is being tracked by a radar at O. At the point indicated, the aircraft has a horizontal velocity of 540 km/h and no horizontal acceleration. The radius of curvature P 540 km/h | 300 m of the circular path at this point is 1500 m. Determine the following: (a) the acceleration of P. (b) the values of r and Ô (c) the values of i and Ô 400 marrow_forwardTwo boy A and B running in the opposite direction in adjacent lanes, at t=0, boy A accelerates at a constant rate of 6.0 ft/s2. Five seconds later, boy B starts and accelerates at a constant rate of 9.7 ft/s2. Knowing that boy B passes original point 18 s after boy A started from there .Determine (A) when and where boy B will overtake boy A. b) the speed of each boys at thatarrow_forward
- Problem 11: Particles A and B are traveling around a circular hoop at a speed of 8 m/s at the instant shown. If the speed of B is increasing at constant 4 m/s², and the speed of A is increasing at 0.8t m/s², determine: (a) The time to at which the particles will collide. Ans: t = 2.51s, 14.63 s (b) The magnitude of the accelerations of both particles just before the collision occurs. Ans: a₁ = 22.22aB = ( aA 65.12 8 = 120⁰ r = 5m Problem 12: A boat has an initial speed of 16 ft/s. If it then increases its speed at the rate = 1.5s ft/s², where s is the distance travelled in ft, determine the time needed for the boat to travel s = 50 ft. The path of the boat is a circle of radius p = 80ft. Ans: t = 1.68 sarrow_forwardA car is traveling at a constant speed of 54 km/h when its driver sees a child run into the road. The driver applies her brakes until the child returns to the sidewalk and then accelerates to resume her original speed of 54 km/h; the acceleration record of the car is shown in the figure. Assuming x= 0 when t= 0, determine (a) the time t1 at which the velocity is again 54 km/h, (b) the position of the car at that time, (c) the average velocity of the car during the interval 1 s ≤ t≤ t1.arrow_forwardali 4 Q4// Two cars A and B, approaching each other in adjacent highway lanes. A and B are 0.8 mi apart at t=0, and their speed are 70 mi/h and 40 mi/h respectively when they at P and Q position. Knowing that car A passes point Q 38 s after B was there and that B passes point P 42 s after A was there. Determined: *. a) The uniform acceleration of A - Llä 4 Q4-b)the uniform acceleration of „B blä: 4 Q4-c) when the cars passes each * ,other Lli 3 Q4-d) the speed of B when the .cars passes each otherarrow_forward
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