Problem 2A car starts from rest and reaches a speed of 20m/s after traveling 125m along a straight road.a. Determine its constant acceleration (in m/s?).11.6C.D.2.6DQUESTION 9.b) Determine the time of travel (in second).A.2.512C.1.6D.12.5A.B.B.

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Answered: Problem 2 A car starts from rest and…

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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An elevator starts from rest and moves upward, accelerating at a rate of 1.2 m/s², until it reaches a speed of 6.8 m/s, which it maintains. 2.0 seconds after the elevator starts moving, a man 36 m above the initial position of the elevator throws a ball upward with an initial velocity of 27.5 m/s. Determine the time it will take the elevator to hit the ball, in seconds.
An automobile travels along a straight road at 15.65 m/s through a 11.18 m/s speed zone. A police car observed the automobile. At the instant that the two vehicles are abreast of each other, the police car starts to pursue the automobile at a constant acceleration of 1.96 m/s . The motorist noticed the police car in his rearview mirror 12 s after the police car started the pursuit and applied his brakes and decelerates at 3.05 m/s . (Hint: The police will not go against the law.) a) Find the total time required for the police car to overtake the automobile. b) Find the total distance travelled by the police car while overtaking the automobile. c) Find the speed of the police car a the time it overtakes the automobile. d) Find the speed of theautomobile at the time it was overtaken by the police car.
The height h(t), in meters, above the ground of a certain soccer ball kick t seconds after the ball is kicked can be approximated by h(t) = −4.9t2 + 12.2t. Determine the time (in seconds) for which the ball is in the air. Round to the nearest tenth of a second. ? sec
A Based on observations, the speed of a jogger can be approximated by the relation v = 6.4 (1 − 0.03x)0.4 , where v and x are expressed in mi/h and miles, respectively. Knowing that x = 0 at t = 0, determine (a) the distance the jogger has run when t =1.5 h, (b) the jogger’s acceleration in ft/s2 at t = 0, (c) the time required for the jogger to run 5 mi.
In anticipation of a long 7° upgrade, a bus driver accelerates at a constant rate of 3 ft/s2 while still on a level section of the highway. Knowing that the speed of the bus is 60 mi/h as it begins to climb the grade and that the driver does not change the setting of his throttle or shift gears, determine the distance traveled by the bus up the grade when its speed has decreased to 50 mi/h.
Based on observations, the speed of a jogger can be approximated by therelation v = 6.4 (1 − 0.03x)0.4 , where v and x are expressed in mi/h and miles,respectively. Knowing that x = 0 at t = 0, determine (a) the distance the jogger hasrun when t =1.5 h, (b) the jogger’s acceleration in ft/s2 at t = 0, (c) the time requiredfor the jogger to run 5 mi. please show every single step in the process thanks
The brakes of a car are applied, causing it to slow down at a rate of 4.45 m/sec2. Knowing that the car stops in 54 m, determine the time required for the car to stop.
A police car is traveling north on a straight road at a constant20.0 m>s. An SUV traveling north at 30.0 m>s passes the police car. Thedriver of the SUV suspects he may be exceeding the speed limit, sojust as he passes the police car he lets the SUV slow down at a constant1.80 m>s2. How much time elapses from when the SUV passes the police car to when the police car passes the SUV?
6. The speed of a particle moving in a circle with radius 2.0 m increases its speed constantly at a rate of 4.4 m / s2. At an instant when the magnitude of the total acceleration is 6.0 m / s2, what is the velocity of the particle? Answers: a) 3.9 m/s b) 2.9 m/s c) 3.5 m/s d) 3.0 m/s e) 1.4 m/s
1. A car with an initial velocity of 45 kph and has a uniform acceleration of 5m/s2. Determine the time required for the car to reach 150 m from its initial position x0 = 0 and the speed of the car in kph as passes into 150m. 2. A man is required to pay 57500 at the end of 15 days or 60000 at the end of 60 days. Determine the rate of interest
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DYNAMICS OF RIGID BODIES (RECTILINEAR MOTION WITH CONSTANT ACCELERATION) A scooter starts from rest and moves with a constant acceleration of 1.2 m/s2. Determine its velocity, after it has travelled for 60 meters.

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Problem 2 A car starts from rest and reaches a speed of 20m/s after traveling 125m along a straight road. a. Determine its constant acceleration (in m/s?). 1 1.6 C. 2 D. 2.6 DQUESTION 9. b) Determine the time of travel (in second). A. 2.5 12 C. 1.6 D. 12.5 A. B. B.