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

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

Name: Big Boris (90kg) skates backward, 1.0 meterahead of small skater Sofi
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Description: Big Boris (90kg) skates backward, 1.0 meterahead of small skater Sofia (45 kg) , holding herhand as they travel 3.0 /s .At the 30-second mark, Boris starts pulling Sofiapast him, so that by time 32.0 s she is 1.0 mahead of him.What was the pair's mo

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter10: Systems Of Particles And Conservation Of Momentum

Section: Chapter Questions

Problem 4PQ: A mother pushes her son in a stroller at a constant speed of 1.52 m/s. The boy tosses a 56.7-g...

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a man of mass m1 = 70.0 kg is skating at v1 = 8.00 m/s behind his wife of mass m2 = 50.0 kg, who is skating at v2 = 4.00 m/s. Instead of passing her, he inadvertently collides with her. He grabs her around the waist, and they maintain their balance. (a) Sketch the problem with before-and-after diagrams, representing the skaters as blocks. (b) Is the collision best described as elastic, inelastic, or perfectly inelastic? Why? (c) Write the general equation for conservation of momentum in terms of m1, v1, m2, v2, and final velocity vf. (d) Solve the momentum equation for vf. (e) Substitute values, obtaining the numerical value for vf, their speed after the collision.
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