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K> 0 A edugen.wileyplus.com -) O O Chego Study | Guided Solutions and... + X PHYS 4A Homework 3 Exam 1 Review.pdf Ch. 4 Motion in two and three dime... WileyPLUS Vectors Physics - Addition, subtrD) | PHYS 4A Homework 3 WileyPLUS Halliday, Fundamentals of Physics, 10e TIITYLOP Help System Announcements (1 Unread) PRINTER VERSION BACK NEXT The velocity V of a particle moving in the xy plane is given by v = 15.9 - 4.51'+ 8.31, with V in meters per second and t (> 0) in seconds. At t = 3.8 s and in unit-vector notation, ASSIGNMENT RESOURCES PHYS 4A Homework 3 (Ch.4) E Chapter 04. Problem what are (a) the x component and (b) the y component of the acceleration? (c) When (if ever) is the acceleration zero? (d) At what positive time does the speed equal 10 m/s? (a) Number 28 Di unit | m/s^2 2 Chapter 04, Problem D16 E : 04, c 058 E Chapter 04. Problem 070 2 Chapter 04, Problem 090 () Number unit| m/s^2 (e) Number O.6555 Review Score Review Results by Study Obiective units unit is (d) Number 1.515 click if you would like to Show work for this question: Open Show Work SHOW HINT GO TUTORIAL LINK TO TEXT LINK TO SAMPLE PROBLEM VIDEO MINI-LECTURE MATH HELP MATH HELP MATH HELP MATH HELP Question Attempts: Unlimited SAVE FOR LATER SUBMIT ANSWER powered by * MapleNetExplanation / Answer
here,
d)
velocity , v = ( 5.9 t - 4.5 * t^2) i + 8.3 j
speed , |v| = sqrt(( 5.9 t - 4.5 * t^2)^2 + 8.3^2)
let the speed will be |v| = 10 m/s at time t
10 = sqrt(( 5.9 t - 4.5 * t^2)^2 + 8.3^2)
solving for t
t = 1.95 s
at time t = 1.95 s , the speed is 10 m/s
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