An object at rest explodes into three pieces of equal mass. One moves east at 20 m/s; a second moves 45 degrees south of east at 30 m/s. What is the velocity of the third piece?
OK, I know that the initial linear momentum of zero must be conserved, so I can start summing my momentum in the x and y directions. I'm just confused about what sign (plus or minus) to put on the unknown piece. I don't know what quadrant it is in. Anyway, I divided the y-component by the x-component and got theta = 86.73 degrees and v final of the third piece is 21 m/s. Is this right?© BrainMass Inc. brainmass.com November 24, 2022, 11:43 am ad1c9bdddf
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1. right up the momentums of the two pieces. Remember that ...
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