Click to view larger Image
Choose your offer! Get 10% off sitewide with code SALE17E OR get FREE shipping on $50+ with code SHIP17D. Click For Details >>
This classic demonstration delivers the wow-factor that makes abstract physics concepts unforgettable. Shoot a 25-mm steel ball from a barrel affixed to a moving cart and watch in amazement as it drops back down into the barrel. Kids will learn that the forward motion (horizontal velocity) of a ball ejected vertically is the same as that of the cart from which it was ejected.
The barrel has two spring tension settings. Complete with a 25-mm steel ball and release pin.