A block-spring system oscillates with an amplitude of 365

Question

Estimate the all parts of given question:

Question: A block-spring system oscillates with an amplitude of 3.65 cm. The spring constant is 250 N/m and the mass of the block is 0.600 kg.

Question 1: Determine the mechanical energy of the system.

J

Question 2: Determine the maximum speed of the block.

m/s

Question 3: Determine the maximum acceleration.

m/s²

Please show how you get the answer.