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A 100.0-tonne spacecraft moving in the +x-direction at 0.49 m/s docks with a 57.0-tonne spacecraft moving...

A 100.0-tonne spacecraft moving in the +x-direction at 0.49 m/s docks with a 57.0-tonne spacecraft moving in the -x-direction at 0.32 m/s. Find the velocity of the joined spacecraft.

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Answer #1

conservation of momentum

m1u1-m2u2=(m1+m2)v

v=m1u1-m2u2/(m1+m2)

v=.1959 m/sec in +ve x direction

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