dart guns.

This afternoon my little brother brought some of his friends over and pretty much everything they did had to do with physics: riding bikes, skateboarding, playing basketball and playing with their dart guns. Every time a dart was shot from the gun, it was an example of a projectile. If they held the gun horizantally, the dart would shoot straight out and then drop due to gravity unless it got stuck to the window. If they angled the gun when they shot the dart, the dart would stay in the air longer because it had a higher initial vertical velocity.