1. The two forces of a 3rd law pair always act on different bodies.
TRUE
SO above statement is TRUE because Newton's III law is valid for two different objects where one object will exert force and other body will exert reaction force on it.
2. Part F Given that two bodies interact via some force, the accelerations of these two bodies have the same magnitude but opposite directions. (Assume no other forces act on either body.)
FALSE
This is false because the force of action and Reaction is same on two different objects but for finding acceleration we need to divide the force by mass of two objects and since the mass of two bodies may be different so we can say that acceleration may be different.
3. Part G According to Newton's 3rd law, the force on the (smaller) moon due to the (larger) earth is
(i) greater in magnitude and antiparallel to the force on the earth due to the moon.
(ii) greater in magnitude and parallel to the force on the earth due to the moon.
(iii) equal in magnitude but antiparallel to the force on the earth due to the moon.
(iv) equal in magnitude and parallel to the force on the earth due to the moon.
(v) smaller in magnitude and antiparallel to the force on the earth due to the moon.
(vi) smaller in magnitude and parallel to the force on the earth due to the moon.
Since Earth and moon is an isolated system so here Newton's III law is valid due to which we can say that two forces are equal in magnitude but opposite in sign
so correct answer will be
equal in magnitude but antiparallel to the force on the earth due to the moon.
