Trajeggtory

Teams of up to 2, will build in advance, a device constructed out of specified materials to protect a raw egg from breaking when tossed horizontally over a barrier at a target placed on the floor. The goal is to keep the egg from cracking or breaking while landing as close to the center of the target as possible.

The Course The distance will be 4 m from start to target. There will be a barrier/wall at 2 meters that your device must clear.

Your materials: Safety glasses Cups, plates, or bowls Rubber bands Copy paper Straws Cotton balls Poly fill Packing peanuts Bubble wrap Plastic bags Tape

The rules: Teams must use eggs and plastic bags provided by the event leader and will be allowed to inspect and select their own egg from a carton of available eggs. Once the team chooses an egg, it is their responsibility to keep it from breaking. If the egg is broken before tossing the device, event leaders may not be able t o provide a second egg. Only team members and event leaders will be allowed in the event area while teams are competing. Teams cannot receive outside assistance of any kind from anyone once they enter the competition area. Teams violating this rule will be disqualified.

Teams will have 5 minutes to load the egg, contained within a plastic bag, into the device and seal the device. Teams should bring their own tape or other material needed to seal the device after loading the egg. Before the device is tossed, the event leader will inspect, measure, and record the mass of the device to the nearest 0.1 g and subtract the mass of the egg (previously recorded by the event leader). One team member must toss the device from a reasonably static position behind a marked starting line. The rules:

There will be a barrier (e.g. pvc pipe) between the starting line and the target. The barrier will be a height between 70 & 150cm. The barrier will be placed halfway between the starting line and the target. The device must go over the barrier or the toss will be redone with the same device and egg again. Barrier height will be announced at the start of the event. Targets will be placed so that the center of the target is 4.0 meters from the starting line. It is recommended to place a tarp on the floor underneath the target. The rules:

Device Distance will be measured from the center of the target to where the furthest part of the device comes to rest. This means that if a part of the device breaks off and lands farther from the target than the rest of the device, the distance to that piece will be used. After the device distance has been measured, teams must remove their egg from their own device and have an event leader verify whether the egg has broken or not. Breakage is defined as being cracked or broken enough to leave a wet mark on a paper towel. Eggs that break before being verified as unbroken by an event leader will be scored in Tier 2 as broken. The rules:

Scoring Devices will first be ranked in tiers according to whether the egg breaks. Tier 1= Devices with eggs that survive Tier 2= Devices with eggs that break Tier 3 = Devices, regardless of egg breakage, that violate competition rules in #9. Within each tier, devices will be ranked according using the following formula. Lowest score wins. (Distance in cm ÷ Target Distance in m) + Device Mass in g = Trajeggtory Score) Ties will be broken by the mass of the device. The device with the lowest mass wins the tie.