Using an air-rifle in schools to demonstrate velocity of a bullet: We are wondering what rules there are around using a BB pump rifle in schools to demonstrate velocity of a bullet.

Using an air-rifle in schools to demonstrate velocity of a bullet: We are wondering what rules there are around using a BB pump rifle in schools to demonstrate velocity of a bullet.
This online resource introduces younger students to the concepts of movement.
This video investigates acceleration due to gravity.
This video deals with acceleration due to gravity.
The video investigates whether the mass of an object influences how fast it falls.