Some are
Galileo's experiment to show that mass had little effect on the speed of falling objects involved two cannonballs of different sizes being dropped from a certain height. This showed that, in a vacuum at least, falling objects fall at the same speed no matter their mass.
Not magnetic
Magnetic: Fridge magnet Non magnetic: Milk
It non magnetic
there are 4 cannonballs
CannonBalls R us
Cannonballs did not exist in medieval times. They belong to a later era.
Cannonballs
Some are
yes
This describes a four-sided pyramid.
Love Music and Cannonballs - 1916 was released on: USA: 8 March 1916
No.
He catched it.
It is n*(n + 1)*(2*n + 1)/6
There were two kinds of cannonballs. First there were the solid metal cannonballs that were use to break fortifications, buildings and ships. There were also hollow cannonballs that were filled with gunpowder and after the fuse burned down would explode, these were used against troops and ammunition stores.