A pair of identical balls are connected by a massless rod, and thrown straight up into the air. The velocity of the center of mass is initially 17.2 m/s upward. Precisely 1.0 s later, one of the balls is measured to be instantaneously at rest. What is the velocity of the other ball at this time? Ignore air resistance.
A) 14.8 m/s up
B) 9.8 m/s down
C) 7.4 m/s up
D) 7.4 m/s down

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The Answer of A pair of identical balls are connected by a massless rod, and thrown straight up into the air. The velocity of the center of mass is initially 17.2 m/s upward. Precisely 1.0 s later, one of the balls is measured to be instantaneously at rest. What is the velocity of the other ball at this time? Ignore air resistance.
A) 14.8 m/s up
B) 9.8 m/s down
C) 7.4 m/s up
D) 7.4 m/s down

A Pair of Identical Balls Are Connected by a Massless