You drop a water balloon on your friend’s head from

the third-story window of your apartment building,
15.0 m from the ground.

What is the water balloon’s acceleration while it is
in the air?
• How much time does it take for the water balloon
to fall?
• How fast is it going as it hits your friend’s head?
• How would these answers be different if, instead
of dropping the water balloon, you tossed it
straight upward with a speed of 5 m/s?