Physics, 05.03.2021 21:40, genyjoannerubiera

2. John, whose mass is 70 kg, rolls along the sidewalk on in-line skates at 5.55 m/sec towards his sister Sue whose mass is 50 kg coming towards him at a
velocity of 4.5 m/sec. John grabs Sue's hand and pulls her with him. Assuming a
frictionless surface, what is their velocity as they continue to roll down the
sidewalk?

Answers: 2

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2. John, whose mass is 70 kg, rolls along the sidewalk on in-line skates at 5.55 m/sec towards his...