15 J of work were expended moving an 18 kg block. At what velocity did the block move? Provide step by step walkthrough

2 answers
Question:

15 J of work were expended moving an 18 kg block. At what velocity did the block move?
Provide step by step walkthrough

Answers

Answer:1.29m/sExplanation:Since work and energy have same unit of measurement, thenkinetic energy of the block = 15JM = 18kgV =?K.E = 1/2MV^2V^2 = 2K.E /MV^2 = (2 x 15)/18Take the square root of both side V = √[(2 x 15)/18]V = 1.29m/sThe block moved with a velocity of 1.29m/s

Answer:√(5/3)m/sExplanation:Kinetic energy(ke)=15joulesMass(m)=18kgVelocity(v)=?Ke=(mxv^2) ➗ 215=(18xv^2) ➗ 2Cross product (18xv^2)=15x218xv^2=30Divide both sides by 18(18xv^2)/18=30/18v^2=5/3v=√(5/3)v=√(5/3)m/s

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