Kamri Noel asks National Geographic’s Tom O’Brien about the physics of medieval trebuchets.
➡ Subscribe for more National Geographic Kids videos: http://bit.ly/SubscribeToNatGeoKids
➡ Check out our playlist: http://bit.ly/WatchMoreHowThingsWork
➡ Visit our website: http://bit.ly/NGKidsHTW
➡ Check out Try This!: http://bit.ly/NGKTryThis

About How Things Work:
Kamri Noel does more than just Google how things work—she gets some of the world’s most knowledgeable experts from National Geographic to explain.

Check out our other fun series!:
Cool Science Experiments: http://bit.ly/NGKCoolScienceExperimentsPlaylist
Try This!: http://bit.ly/WatchMoreTryThis

More National Geographic Kids:
Visit our website for more games, photos, and videos: http://bit.ly/NatGeoKidsSite
Facebook: http://bit.ly/NGKFacebook
Twitter: http://bit.ly/NGKTwitter

About National Geographic Kids:
Nat Geo Kids makes it fun to explore your world with weird, wild, and wacky videos! Videos featuring awesome animals, cool science, funny pets, and more, are made just for curious kids like you. So pick a topic you love and start watching today!

Visit the National Geographic Kids website for more games, photos, and videos at http://natgeokids.com. Watch more National Geographic Kids videos at http://natgeokids.com/video

How Trebuchets Work | How Things Work with Kamri Noel
https://youtu.be/W5RFoowvGkw

National Geographic Kids
https://www.youtube.com/NatGeoKids