Taking pictures

• What is the first step in the method for measuring free fall?

  Measure the height of fall with a ruler.
• What is the second step in the method for measuring free fall?

  Record the time of fall using the stop clock.
• What does the equation $s =$$ut +$$\frac{1}{2}at^2$ represent in the context of free fall?


  It calculates the distance fallen based on initial velocity, acceleration, and time.
• In the equation $s =$$ut +$$\frac{1}{2}at^2$, what values are used for $u$ and $a$ when calculating free fall?


  $u =$$0 \text{ m s}^{-1} \text{ and } a =$$g$
• What are the methods used to record the fall of a small metal ball?

  • Use a camera in rapid fire repeating mode to record the fall.
  • Use a stroboscope to illuminate the scene with rapid flashes.
  • Hold the camera shutter open to capture multiple images of the falling ball.
  • Examine the recording to determine the position of the ball at regular time intervals.