A spring that has negligible mass and a spring constant of k = 900 N/m, is attached to a table, so that the spring is in a vertical position. A ball of mass m = 0.300 kg is placed on the spring, and the spring is then compressed by 0.15 m. The spring is then released. (a) What velocity will the ball have after it leaves the spring, which happens when the spring has returned to its unstretched length? (b) What is the maximum height, above its original position, that the ball will reach before it starts to fall back to the table?

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A spring that has negligible mass and a spring constant of k = 900 N/m, is attached to a table, so that the
spring is in a vertical position. A ball of mass m = 0.300 kg is placed on the spring, and the spring is then compressed
by 0.15 m. The spring is then released. (a) What velocity will the ball have after it leaves the spring, which happens
when the spring has returned to its unstretched length? (b) What is the maximum height, above its original position,
that the ball will reach before it starts to fall back to the table? 

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