Notes: Ensure that the button underneath the paddle (the thing the ball falls on) is being pressed down. If the switch is set to drop, and the timer is not counting while paddle is up, then the button is not being pressed. When resetting paddle, leave switch to drop, press up firmly on paddle, ensure timer is counting down, then switch to hold and start demo. Math Description: s=1/2gt(2)

Size: 2m drop. Condition: Good. Hazard: None.