Demonstrates that for every action there in an equal & opposite reaction Lift & drop one ball to see one ball pop out from the other side Lift two balls & ball pop out. Leave this popular toy on your desk for a school year of enjoyment & learning . For demonstration the collision of ball including 6 balls hung on an iron frame & stand .
Have a catalog? Know what you would like to buy? Save time, enter item and quantities here, when you are finished click on the shopping cart button. You are ready to check out, it’s that quick.
Don't have an account ?
Already a Member?