Blocks with masses of 2 kg, 4 kg, and 6 kg are lined up in a row on a frictionless table. All three are pushed forward by a 54 N force applied to the 2 kg block. Part A How much force does the 4 kg block exert on the 6 kg block? Express your answer to two significant figures and include the appropriate units. F= Value Submit Request Answer Part B ? Units How much force does the 4 kg block exert on the 2 kg block? Express your answer to two significant figures and include the appropriate units. Value Submit Request Answer ? Units