If the only forces acting on a 2.0-kg mass are 
, and 
, what is the magnitude of the acceleration of the particle?
A. 1.5 m/s2
B. 6.5 m/s2
C. 4.7 m/s2
D. 9.4 m/s2
E. 7.2 m/s2
Answer: C
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