Problems

1
Problems Free Fall

• Chuck drops a rock from the top of a tower and
  measures the time to fall to the ground as 3.2 s.
  
• How tall is the tower?
• How fast is the rock moving just before it hits
  the ground?
• Robin shoots an arrow straight down from the top
  of a 20 m cliff with an initial speed of 60 m/s.
• What is its speed just before hitting the ground?
• How long was it in the air?