Big Boris (90kg) skates backward, 1.0 meter ahead of small skater Sofia (45 kg) , holding her hand as they travel 3.0 /s · At the 30-second mark, Boris starts pulling Sofia past him, so that by time 32.0 s she is 1.0 m ahead of him. What was the pair's momentum before this move began (relative to the ice)? + 315 kgm/. + 135 kgm/s + 405 kgm/s + 225 kgm/s

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Chapter1: Units, Trigonometry. And Vectors
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Big Boris (90kg) skates backward, 1.0 meter
ahead of small skater Sofia (45 kg) , holding her
hand as they travel 3.0 /s .
At the 30-second mark, Boris starts pulling Sofia
past him, so that by time 32.0 s she is 1.0 m
ahead of him.
What was the pair's momentum before this move
began (relative to the ice)?
+ 315 kgm/s
+ 135 kgm/s
+ 405 kgm/s
+ 225 kgm/s
Transcribed Image Text:Big Boris (90kg) skates backward, 1.0 meter ahead of small skater Sofia (45 kg) , holding her hand as they travel 3.0 /s . At the 30-second mark, Boris starts pulling Sofia past him, so that by time 32.0 s she is 1.0 m ahead of him. What was the pair's momentum before this move began (relative to the ice)? + 315 kgm/s + 135 kgm/s + 405 kgm/s + 225 kgm/s
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