Imagine that you are holding a book of 5 N (Newtons) at rest on the palm of your hand. Complete the ff statements:
a) A downward force of 5 N (Newtons) is exerted on the book by the ______.
b) The reaction to the force in (a) is exerted on the ______ by the hand.
c) The upward force of ______ is exerted on the ______ by the hand.
d) The reaction to the force in (c) is a force of ______ N, exerted by the ______ on the ______.
c'mon, think.
(b) gives the answer to (a)
and then (c) is clear
(d) 5N book hand