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A 1.50 kg block slides with a speed of 0.910 m /s on a frictionless horizontal surface until it Part D encounters a spring with a force constant of 722 N/m . The block comes to rest after compressing the spring 4.15 cm. Find the spring potential energy, U, the kinetic energy of the block, K, and the total mechanical energy of the system, E, for compressions of 3.00 cm. Enter your answers numerically separated by commas. AEd ? Ud, Ka, Ed = 0.345,0.296,0.621 J Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part E Find the spring potential energy, U, the kinetic energy of the block, K, and the total mechanical energy of the system, E, for compressions of 4.00 cm. Enter your answers numerically separated by commas