Intro to Forces + Newton's Laws Video Lessons

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Problem: 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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(a)

a=a1 + Fm=ma1+Fm=ma1m+Fm

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Problem Details

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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