An airplane is flying with constant speed along a horizontal ...

[biggirl4568]

An airplane is flying with constant speed along a horizontal circle. Is the direction of its acceleration constant?
 
  What will be an ideal response?

Question 2

You hit a tennis ball over the net. When the ball reaches its maximum height, its speed is
 
  A) equal to its initial speed.
  B) less than its initial speed.
  C) greater than its initial speed.
  D) zero.
  E) gt.

[Smiles0805]

Answer to Question 1

No. The acceleration is directed towards the center of the circle, so the acceleration vector rotates as the body rotates.

Answer to Question 2

B

[biggirl4568]

Wow, this really help

[isabelt_18]

Thanks for the timely response, appreciate it