A 0.50-kg block attached to an ideal spring with a spring constant of 80 N/m oscillates on a horizontal frictionless surface.The total mechanical energy is 0.12 J.The greatest speed of the block is:
A)0.15 m/s
B)0.24 m/s
C)0.49 m/s
D)0.69 m/s
E)1.46 m/s

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The Answer of A 0.50-kg block attached to an ideal spring with a spring constant of 80 N/m oscillates on a horizontal frictionless surface.The total mechanical energy is 0.12 J.The greatest speed of the block is:
A)0.15 m/s
B)0.24 m/s
C)0.49 m/s
D)0.69 m/s
E)1.46 m/s

A 050-Kg Block Attached to an Ideal Spring with a Spring