A pair of identical balls is connected by a massless rod, and thrown straight up into the air, such that the center of mass of the pair reaches a maximum height of 13.2 m above the point of release. On the way up, when the center of mass is at 6.6 m above to point of release, the velocity of one ball is measured to be 7.7 m/s downward. What is the velocity of the other ball at this time? Ignore air resistance.

A. 19.1 m/s up
B. 3.7 m/s up
C. 8.0 m/s up
D. 0.3 m/s up
E. 0.3 m/s down
F. 3.7 m/s down


A. 19.1 m/s up

Physics & Space Science

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