Two identical arrows, one with twice the kinetic energy of the ...

[darbym82]

Two identical arrows, one with twice the kinetic energy of the other, are fired into a bale of hay. Compared with penetration of the slow arrow, the faster arrow penetrates
 
  A) the same distance.
  B) twice as far.
  C) four times as far.
  D) more than four times as far.
  E) none of the above

Question 2

About 40 J is required to push a crate 4 m across a floor. If the push is in the same direction as the motion of the crate, the force on the crate is about
 
  A) 4 N.
  B) 10 N.
  C) 40 N.
  D) 160 N.

[kbennett34]

Answer to Question 1

Answer: B

Answer to Question 2

Answer: B