2د الحركة في بعد واحد.. . .Question #2A race car, traveling at constant speed, makes one lap arounda circular track of radius rin a time t. The circumference of acircle is given by C= 2nr. Which one of the followingstatements concerning this car is true?a) The displacement of the car does not change with time.b) The instantaneous velocity of the car is constant.c) The average speed of the car is the same over any timeinterval.d) The average velocity of the car is the same over any timeinterval.e) The average speed of the car over any time interval is equalto the magnitude of the average velocity over the same timeinterval.Question #3A turtle and a rabbit are to have a race. The turtle's/ 10average speed is 0.9 m/s. The rabbit's average speed is9 m/s. The distance from the starting line to the finish lineis 1500 m. The rabbit decides to let the turtle run beforehe starts running to give the turtle a head start. What,approximately, is the maximum time the rabbit can waitbefore starting to run and still win the race?a) 15 minutesb) 18 minutesc) 20 minutesd) 22 minutese) 25 minutesQuestion #4A turtle, moving at a constant velocity of 0.9 m/s duesouth, is in a race with a rabbit, who runs at a moderatespeed of 9 m/s. When the turtle is 45 m from the finishline, the rabbit begins taunting the turtle by running fromthe turtle to the finish line (without crossing it) and back tothe turtle. The rabbit continues going back and forthbetween the turtle and the finish line until the turtlecrosses the finish line. About how many meters does therabbit travel as the turtle travels that last 45 m? Assumethe rabbit always runs at 9 m/s and doesn't lose any time

Since we only answer one question at a time, we will answer the first one. Please resubmit the…

Question #2 A race car, traveling at constant speed, makes one lap around a circular track of radius rin a time t. The circumference of a circle is given by C= 2nr. Which one of the following statements concerning this car is true? a) The displacement of the car does not change with time. b) The instantaneous velocity of the car is constant. c) The average speed of the car is the same over any time interval. d) The average velocity of the car is the same over any time interval. e) The average speed of the car over any time interval is equal to the magnitude of the average velocity over the same time interval.

Question #2 A race car, traveling at constant speed, makes one lap around a circular track of radius rin a time t. The circumference of a circle is given by C= 2nr. Which one of the following statements concerning this car is true? a) The displacement of the car does not change with time. b) The instantaneous velocity of the car is constant. c) The average speed of the car is the same over any time interval. d) The average velocity of the car is the same over any time interval. e) The average speed of the car over any time interval is equal to the magnitude of the average velocity over the same time interval.

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

1. The wheel starts rotating from rest, is w=0.1.0², where 1) if its angular velocity W as a function of angular position is in radian, and its radius ris 0.2 m, what is the magnitude of the linear velocity of point Pafter the wheel has turned 1.5 revolution(s) from rest. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point and proper unit. Your Answer: Answer P units
1. The wheel starts rotating from rest, 5) if its angular velocity W as a function of angular position is w=0.2-0², where 0 is in radian, and its radius ris 0.3 m, what is the magnitude of the total linear acceleration (in m/s2) of point P after the wheel has turned 1.4 revolution(s) from rest. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Your Answer: Answer P
P V:• A docs.google.com Asiacell ll. امتحان فصلي. . . نظرية مكان . الاجابة على جميع Q1: A wheel accelerates uniformly from rest to 2000 r.p.m. in 20 seconds. What is its angular acceleration? How many revolutions does the wheel make in attaining the speed of 2000 r.p.m.? Q2: Figure (1), A link AB of a four-bar linkage ABCD revolves uniformly at 120 r.p.m. in a clockwise direction. Find the angular acceleration of links BC and CD and acceleration of point E in link BC? Given: AB= 7.5 cm, BC = 17.5 cm, EC = 5 cm, CD = 15 cm, DA = 10 cm and the angle BAD = 90°. 5 cm 17.5 cm- Va 15 cm 7.5 cm 90° 10 cm Figure (1) Q3: Find the number of degree of freedom (n) for figure (2)? Link 3 Link 4 Link 5 Link 2 Link 1 Figure (2) ف إضافة ملف
1. The wheel starts rotating from rest, 4) if its angular velocity W as a function of angular position 0 is w=0.1-0², where O is in radian, and its radius ris 0.2 m, what is the magnitude of the normal linear acceleration (in m/s2) of point Pafter the wheel has turned 1.1 revolution(s) from rest. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Your Answer: Answer
Two tractors leave point O at the same time and drive in the directions shown. Tractor A is traveling at a m m constant speed of 4 = 9. Tractor B is traveling at a constant speed of UB = 13 S Hint: 1. Use constant acceleration equations to find time. VA A Variable 0₁ 02 0₁ -C = y + 0₂ Values for the figure are given in the following table. Note the figure may not be to scale. Value 30 degrees 35 degrees Round your final answers to 3 significant digits/figures. V = ( m a. Determine the velocity of tractor A relative to tractor B, V4, express as a Cartesian vector. b. Determine the magnitude of the velocity of tractor A relative to tractor B, c. How long after leaving point O will the tractors be 500 m apart? VB B m X
1. The wheel starts rotating from rest, 3) if its angular velocity W as a function of angular position O is w=0.3•0², where O is in radian, and its radius r is 0.3 m, what is the magnitude of the tangential linear acceleration (in m/s2) of point P after the wheel has turned 1.3 revolution(s) from rest. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Your Answer: Answer
1. The wheel starts rotating from rest, 3) if its angular velocity W as a function of angular position is w=0.2-0², where is in radian, and its radius ris 0.2 m, what is the magnitude of the tangential linear acceleration (in m/s²) of point P after the wheel has turned 1.4 revolution(s) from rest. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Your Answer: Answer P
UPVOTE will be given! Please write the complete solutions legibly. No long explanation needed. Answer in 2 decimal places. Dynamics of Rigid Bodies A particle moves that is defined by the parametric equations given below (where x and y are in meters, and t is in 2 seconds). x = 3t2 - 1 ; y = t3 - 3t2 + t - 3 c. radial component of the acceleration (m/s2) d. transverse component of the acceleration (m/s2)
5. Figure 3, below, shows a rollercoaster ride. The curve of the rollercoaster is given by the equation: 1 y = 120 a) Determine p, the radius of curvature for the rollercoaster curve. b) Under certain test conditions, the rollercoaster car is at point B with a speed of 22 m/s and is accelerating at a, = 3.5 m/s². Determine the magnitude of the acceleration of the rollercoaster at this point. c) Under different test conditions, the rollercoaster starts from rest at A and its speed increases given by the equation: a = (5-0.05s) m/s². Determine the magnitude of the acceleration of the rollercoaster when it reaches point B, where s = 45 m. 30 m- "dow²
Two tractors leave point o at the same time and drive in the directions shown. Tractor A is traveling at a TIL 8 m constant speed of ₁9 Tractor B is traveling at a constant speed of = 13 - Hint: 1. Use constant acceleration equations to find time. VA A Variable 0₁ 0₂ -16.787 = 16.806 0₁ values for the figure are given in the following table. Note the figure may not be to scale. value 30 degrees 35 degrees t= 29.751 a. Determine the velocity of tractor A relative to tractor 6, 4, express as a Cartesian vector. b. Determine the magnitude of the velocity of tractor A relative to tractor 8, c. How long after leaving point O will the tractors be 500 m apart? Round your final answers to 3 significant digits/figures. VA = ||= xi -0.809 X 8 0₂ m VB B TIL x= X
c) During his rotational throwing motion, a discus athlete increases his angular velocity from 3.9 radians per second to 21.6 radians per second in the period just before he releases the discus. The length of time over which this occurred was 0.8 seconds. What is the average angular acceleration of the thrower? OC
DYNAMICS OF RIGID BODIES (UPVOTE WILL BE GIVEN. PLEASE WRITE THE COMPLETE SOLUTIONS AND FBD LEGIBLY. NO LONG EXPLANATION NEEDED. ANSWER IN 2 DECIMAL PLACES. BOX THE FINAL ANSWER.) A ball is shot Vertically into the air at a of 193.20 ft/sec. After 4 secs another ball is shot Vertically into the air. What initial velocity must the second ball have in order to meet the first ball 386.40 ft. from the ground?