a) 9.8 N , 30 degree below horizontal

b) zero

c) 9.8 N , up

d) 9.8N , down

e) 1.5N , down

a) the action force is greater than the reaction force .

b) they act on different bodies .

c) they are in the same direction .

d) the reaction force exists only after the action force is removed .

e) the reaction force is greater than the action . . . continues
Solution:
Ans: They act on different bodies .

A. Putting a second brick on top.

B. Decreasing the surface area of contact.

C. Increasing the surface area of contact.

D. Decreasing the mass of the brick

E. None of the above.