A ball is thrown straight up, reaches a maximum height, then ...

[809779]

A ball is thrown straight up, reaches a maximum height, then falls to its initial height. Make a statement about the direction of the velocity and acceleration as the ball is coming down.
 
  A)
 
  Both its velocity and its acceleration point upward.
  B)
 
  Its velocity points upward and its acceleration points downward.
  C)
 
  Its velocity points downward and its acceleration points upward.
  D)
 
  Both its velocity and its acceleration point downward.
  E)
 
  Neither velocity nor acceleration can be determined without additional information.

Question 2

State Gay-Lassac's law.
 
  What will be an ideal response?

[skipfourms123]

Answer to Question 1

D

Answer to Question 2

At constant volume, the absolute pressure of a gas is directly proportional to the absolute temperature.