With self-crafted accelerometers strapped to their wrists, teens at USU Physics Day at Lagoon amusement park await their turn to measure G-forces on the Colossus Fire Dragon roller coaster.

More than 6,000 teens from Utah, Idaho, Wyoming and Nevada descended on Davis County's überplayground May 15 for a day of academic competition and fun.

The 85-foot tall Colossus Fire Dragon roller coaster, site of USU Physics Day's Colossus’ Colossal G-Forces Contest, zooms through two hoops pressing 75 percent of your body weight into your seat. Talk about G-forces!

Eighth graders Lexi Jensen, left, and Dakota Burt of Utah's North Cache 8th/9th Grade Center, don Pasco Scientific vests equipped with data recorders and accelerometers for their ride of the Colossus Fire Dragon.

Sporting T-shirts with Einstein's image and the slogan, "Einstein is My Homeboy," students from Utah's Brighton High School review physics problem on their way to the next ride.

Participants in USU Physics Day's Sky Drop Contest, release their raw eggs, encased in protective containers the students designed and built themselves, from the Sky Ride 60 feet above a ground target. Will the eggs stay intact?

A Sky Drop Contest participant displays her "Eye of the Tiger" protective egg case.

Students from Cache Valley's Thomas Edison South Charter Middle School register their entries for the Sky Drop Contest.

"Time's up!" Students from schools in Utah and Idaho participate in a robotic grudge match. The students designed and built the robots to toss balls at an opponent's target.

Utah's Lagoon amusement park provides an enticing physics laboratory for aspiring scientists.

Students from Brighton High School have high hopes for the protective containers for raw eggs they'll drop from the Sky Ride (above.)