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Ray Of Light [21]
3 years ago
7

A Roller Derby Exhibition recently came to town. They packed the gym for two

Physics
1 answer:
arlik [135]3 years ago
7 0

Answer:

14.36m/s

Explanation:

From the law of conservation of linear momentum

m1u1 + m2u2 = v(m1 + m2)

68×17 + 76×12= v(68+76)

1156+912 = 144v

2068 = 144v

v = 2068/144

=14.36 m/s

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