A \( 10 \mathrm{~kg} \) block is released from rest at the top of a incline and brought to rest ...

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A \( 10 \mathrm{~kg} \) block is released from rest at the top of a incline and brought to rest momentarily after compressing the spring by 2 metres. What is the speed of mass just before it reaches the spring :
(A) \( \sqrt{20} \mathrm{~m} / \mathrm{s} \)
(B) \( \sqrt{30} \mathrm{~m} / \mathrm{s} \)
(C) \( \sqrt{10} \mathrm{~m} / \mathrm{s} \)
(D) \( \sqrt{40} \mathrm{~m} / \mathrm{s} \)
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