Answers

2015-08-04T20:52:20+05:30
Coz they both are in opposite in direction.
action= -reaction
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2015-08-04T20:59:11+05:30
Beacuse action and reaction acts in different direction and on different body
A------------->(FAB-->)  (FBA-->)<---------------B
action +reaction = 0
action = -reaction
0