When you pull an object, such as a table, across the floor, the ...

[dejastew]

When you pull an object, such as a table, across the floor, the forward force by you on the table is equal but opposite to the backward force by the table on you.
 
  It seems as though these two forces should balance out, so that the table can't be moved. But the table does move, because
  A) the force by you on the table is larger than the force of the table on you.
  B) the floor pushes forward on the table.
  C) the momentum always acts in a forward direction.
  D) only one of these two forces actually acts on the table.
  E) Newton's laws do not apply to the table considered as a separate object.

Question 2

A 2-kg mass weighs 20 N and is held 4 m above the ground. Its potential energy relative to the ground is
 
  A) 8 J.
  B) 20 J.
  C) 60 J.
  D) 80 J.
  E) none of the above

[coyin]

Answer to Question 1

D

Answer to Question 2

Answer: D

[dejastew]

Both answers were spot on, thank you once again

[coyin]

Great! Please up vote