Block A has a mass of 20 kg and block B has a mass of 50 kg. The spring is stretched 0.2 m at the instant thrun in /innra 13 Figure k= 30 N/m 1 of 1. Part A Determine the acceleration of block B at this instant if it is originally at rest. Neglect friction Express your answer to three significant figures and include the appropriate units. 68. Submit DA Value Request Answer → Units

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