A baseball is hit with a bat and, as a result, its direction is ...

[frankwu]

A baseball is hit with a bat and, as a result, its direction is completely reversed and its speed is doubled.
 
  If the actual contact with the bat lasts 0.45 s, what is the ratio of the magnitude of the average acceleration of the ball to its original speed?
  A) 6.7 s-1
  B) 4.4 s-1
  C) 2.2 s-1
  D) 0.15 s-1

Question 2

After landing on an unexplored Klingon planet, Spock tests for the direction of the magnetic field by firing a beam of electrons in various directions and by recording the following observations: Electrons moving upward feel a magnetic force in the
 
  northwest direction. Electrons moving horizontally toward the north are pushed downward. Electrons moving horizontally toward the southeast are pushed upward. Mr. Spock therefore concludes that the magnetic field at this landing site is in which direction? A) toward the east
  B) toward the northeast
  C) toward the southwest
  D) toward the southeast
  E) toward the west

[Loise Hard]

Answer to Question 1

A

Answer to Question 2

C