The desperate contestants on a TV survival show are very hungry, but the only food they can see is some fruit hanging on a branch high in a tree. Fortunately, they have a spring they can use to launch a rock which has a spring constant of 1530 N/m. They can compress the spring by a maximum of 19.1 cm and they choose a rock that has a mass of 904 g.
a) With what speed does the rock leave the spring?
b) To what height can the rock be launched?
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