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Two ice skaters, with masses of 30kg and 85kg , are at the center of a 40m -diameter circular rink. The skaters push off against each other and glide to opposite edges of the rink. Part A If the heavier skater reaches the edge in 30s , how long does the lighter skater take to reach the edge?
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t = 30 s

d = 20 m

V = 20/30 = 0.666 m/s

m1 v1 = m2 v2

85 * 0.666 = 30 * v2

v2 = 1.888 m/s

d = 20 m

t = 20/1.888

= 10.588 seconds
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