Projectile Track - With Force Mechanism. What are the effects of acceleration and gravity on a moving body? Determine acceleration, speed and distances when applying a variable force.
Propel a ball or two down our track and observe how far and how many balls, positioned further down the track, move. 
Includes: 43" long one-piece metal track; plastic supports; trigger with 4 settings; 5 steel balls; 3/4" diameter; wood block and instructions.