2/20 In traveling a distance of 3 km between points A and D, a car is driven at 100 km/h from A to B for t seconds and 60 km/h from C to D also for t seconds. If the brakes are applied for 4 seconds between B and C to give the car a uniform deceleration, calculate t and the distance s between A and B. 100 km/h 60 km/h A B C D 3 km

2/20 In traveling a distance of 3 km between points A and D, a car is driven at 100 km/h from A to B for t seconds and 60 km/h from C to D also for t seconds. If the brakes are applied for 4 seconds between B and C to give the car a uniform deceleration, calculate t and the distance s between A and B. 100 km/h 60 km/h A B C D 3 km

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

See similar textbooks

Similar questions

A particle which moves with curvilinear motion has coordinates in millimeters which vary with the time t in seconds according to x = 1.4t²-3.6t and y = 4.2t²-t3/3.5. Determine the magnitudes of the velocity v and acceleration a and the angles which these vectors make with the x-axis when t = 5.7 s. Answers: When t = 5.7 s, V= i mm/s, ex = i i mm/s², ex- i a=
A bus driver heads south with a steady speed of v₁ = 22.0 m/s for t₁ = 3.00 min, then makes a right turn and travels at v₂ = 25.0 m/s for t₂ = 2.60 min, and then drives northwest at v3 = 30.0 m/s for t3 = 1.00 min. For this 6.60-min trip, calculate the following. Assume +x is in the eastward direction. (a) total vector displacement (Enter the magnitude in m and the direction in degrees south of west.) magnitude. direction For each straight-line movement, model the car as a particle under constant velocity, and draw a diagram of the displacements, labeling the distances and angles. Let the starting point be the origin of your coordinate system. Use the relationship speed distance/time to find the distances traveled during each segment. Write the displacement vector, and calculate its magnitude and direction. Don't forget to convert min to si m x distance/time to find the Model the car as a particle under constant velocity, and draw a diagram of the displacements, labeling the distances…
In traveling a distance of 3.4 km between points A and D, a car is driven at 119 km/h from A to B for t seconds and 64 km/h from C to D also for t seconds. If the brakes are applied for 3.1 seconds between B and C to give the car a uniform deceleration, calculate t and the distance s between A and B.
2/85 A projectile is launched with an initial speed of 200 m/s at an angle of 60° with respect to the horizontal. Compute the range R as measured up the incline. Ans. R=2970 m 200 m/s 20
A particle which moves with curvilinear motion has coordinates in millimeters which vary with the time t in seconds according to x = 3t² — 4tand y = 4t² - ²/t³. Determine the magnitudes of the velocity v and acceleration a and the angles which these vectors make with the x-axis when t = 2 s. Ans. v=14.42 mm/s, a = 7.2 mm/s², 0, = 56.3⁰, 0a = 33.7⁰
In traveling a distance of 3.9 km between points A and D, a car is driven at 93 km/h from A to B for t seconds and 51 km/h from C to D also for t seconds. If the brakes are applied for 6.0 seconds between B and C to give the car a uniform deceleration, calculate t and the distances between A and B. Answers: t= S= 93 km/h i i B C 3.9 km 51 km/h S km
An 12.0-kg monkey is climbing down down the rope suspended from point D. At the instant shown, the monkey is descending the rope at a speed of 1.00 m/s and with an acceleration of 1.2 m/s2 (downward). Calculate the magnitude of the tension Tin the rope at Din Newtons to 1 decimal place. D A
A particle which moves with curvilinear motion has coordinates in millimeters which vary with the time t in seconds according to x = 4.9t² - 1.6t and y = 4.3t² - t3/2.1. Determine the magnitudes of the velocity v and acceleration a and the angles which these vectors make with the x-axis when t = 7.0 s. Answers: When t = 7.0 s, V = 67.71 mm/s, ex= -8.32 15.03 mm/s², 0x= a = i -49.32 M
Under the action of force P, the constant acceleration of block B is 6.2 ft/sec² up the incline. For the instant when the velocity of B is 3.1 ft/sec up the incline, determine the velocity of B relative to A (positive if up the slope, negative if down), the acceleration of B relative to A (positive if up the slope, negative if down), and the absolute velocity of point C (positive if up the slope, negative if down) of the cable. B 25° Answers: VB/A = AB/A = Vc = i i ft/sec ft/sec² ft/sec
In traveling a distance of 3.5 km between points A and D, a car is driven at 87 km/h from A to B for t seconds and 49 km/h from C to D also for t seconds. If the brakes are applied for 3.7 seconds between B and C to give the car a uniform deceleration, calculate t and the distance s between A and B. 87 km/h 49 km/h B 3.5 km Answers: t = i i km
A particle which moves with curvilinear motion has coordinates in millimeters which vary with the time t in seconds according to x = 3.2t2 - 1.3t and y = 4.2t2 - t/3.6. Determine the magnitudes of the velocity v and acceleration a and the angles which these vectors make with the x-axis when t = 4.8 s. Answers: Whent= 4.8 s, V = i mm/s, O, = i a = i mm/s?, ex = i
I need the answer as soon as possible