12–149. The train passes point B with a speed of 20 m/swhich is decreasing at a, = - 0.5 m/s². Determine themagnitude of acceleration of the train at this point.12–150. The train passes point A with a speed of 30 m/sand begins to decrease its speed at a constant rate ofa,=- 0.25 m/s².Determine the magnitude of the accelerationof the train when it reaches point B, where sAB = 412 m.y = 200 e 1000Aх-400 m

As per the guidelines the first question will be answered. The given equation of the curve is…

Answered: 12–149. The train passes point B with a…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Similar questions

A car is about to pass through an arc bridge, as shown in the figure below. Given that vx = 5 m/s, determine the magnitude and direction of the car’s acceleration at the highest point B, and at the end of the bridge, point C (assume the car is still on the bridge)
3
Collars A andB slide along the fixed right-angle rods and are connected by a cord of length L = 6.9 m. Determine the acceleration of collar B when y = 2.3 m if collar A is given a constant upward velocity vĄ = 1.61 m/s. The acceleration of B is positive if to the right, negative if to the left. Answer: aB = i m/s2
12-22. The acceleration of the boat is defined by a = when t = 4 s if it has a speed of 3 m/s when t = 0. Problem 12-22 (1.5v¹/2) m/s. Determine its speed
12–154. If the speed of the crate at A is 15 ft/s, which is increasing at a rate v = 3 ft/s² , determine the magnitude of the acceleration of the crate at this instant. y 16 10 ft
12–121. The car passes point A with a speed of 25 m/s after which its speed is defined by v = (25 – 0.15s) m/s. Determine the magnitude of the car's acceleration when it reaches point B, where s = 51.5 m and x = 50 m. 12–122. If the car passes point A with a speed of 20 m/s and begins to increase its speed at a constant rate of a, = 0.5 m/s?, determine the magnitude of the car's %3D acceleration when s = 101.68 m and x = 0. y = 16 – 625' B
At the instant shown, cars A and B are travelling at the speeds shown. If B is accelerating at 1200 mi/h2 while A maintains a constant speed, determine the magnitude of the velocity and acceleration of B with respect to A. Car B moves along the curve having a radius of curvature of 0.7mi. show all the steps in the solution please
12–215. The motor draws in the cord at B with an acceleration of ag = 2 m/s². When sA = 1.5 m, vg = 6 m/s. Determine the velocity and acceleration of the collar at this instant. B 2 m SA
2. When a train is traveling along a straight track at 2 m/s, it begins to accelerate at a = (60v) m/s², where v is in m/s. Determine its velocity and the position 3 s after the acceleration.
An accelerometer C is mounted to the side of the roller-coaster car and records a total acceleration of 3.0g as the empty car passes the bottommost position of the track as shown. If the speed of the car at this position is 205 km/h and is decreasing at the rate of 18 km/h every second, determine the radius of curvature p of the track at the position shown. Answer: p= i m 0.76 m
An automobile is traveling on a curve having a radius of 242 m. If the acceleration of the automobile is 2m/s^2, determine the constant speed at which the automobile is traveling.

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