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OpenStudy (jtresatti2):

model rocket is launched at an angle of 55° to the horizontal, with a momentum of 20 kg-m/s. If the vertical component of its velocity is 40 m/s, what is the mass of the rocket? A. 0.3 kg B. 0.4 kg C. 0.5 kg D. 0.6 kg

OpenStudy (jiteshmeghwal9):

Mass * (vertical component of velocity)=momentum in vertical direction

OpenStudy (jiteshmeghwal9):

M*40=20 sin 55

OpenStudy (jiteshmeghwal9):

Mass=(20 sin55)/40

OpenStudy (jiteshmeghwal9):

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