A student solving for the acceleration of an object has applied appropriate physics principles and obtained the expression a = a1 + F/m where a1 = 3.00 m/s2, F = 12.0 kg•m/s2 and m = 7.00 kg.
(a) First, which of the following is the correct step for obtaining a common denominator for the two fractions in the expression in solving for a?
(b) What is the numerical value of a?
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