ch21-p002 - 2. (a) With a understood to mean the magnitude...

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2. (a) With a understood to mean the magnitude of acceleration, Newton’s second and third laws lead to ma m 22 11 2 7 7 63 10 70 90 49 10 =⇒ = × .. . . kg m s ms kg. 2 2 ch c h (b) The magnitude of the (only) force on particle 1 is
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