The spring is fixed to block A and block $B$ is pressed against the spring. If the spring is compressed $s=200mm$ and then the blocks are released, determine their speeds at the instant block $B$ loses contact with the spring. The masses of blocks A and $B$ are $13kg$ and $16kg,$ respectively. $($Figure $1)$

Part A

Determine the speed of the block $A.$

Express your answer to three significant figures and include the appropriate units.

$v_A=$

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Part B

Determine the speed of the block $B.$

Express your answer to three significant figures and include the appropriate units.