princessammarah4731
28.11.2021 •
Physics
An ice skater at rest on ice catches a dance partner moving 2.5m/s during a performance. the ice skater has a mass of 68kg and the dance partner has a mass of 54kg. what is the speed of the ice skater and dance partner after the collision ?
1.1 m/s
1.4 m/s
2.3 m/s
2.0 m/s
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Ответ:
F = GMm / r²
from Newton's law of gravitational attraction