## Egg Car CrashJuan Pardo Jose Daniel Espinach Bradley Jimenez

Task 1: Finding the minimum force needed to break the egg, the egg will be pushed against the force sensor while it's recorded, when the egg breaks, the recording will stop and the minimum force needed for the egg to break will be recoded.

Development of Task 1: Connect the force sensor to the lab quest and set it up so that when you push it goes to positive, change the recording time to 10 minutes, so you have enough time to break the egg, 1000 samples per minute and start recording, apply more and more force with the force sensor to the egg until it breaks and record the final force. After the run was recorded, the final force needed to break the egg was 12.782 N. The mass of the egg was 59g.

Task 2: Finding the amount of force that the car has when it hits the bottom of the track. Attach the force sensor to the car, then grab the LabQuest and use it to measure the highest point of force, the same way the egg resistance was measured. We found that the force that the car hits the bottom of the track with is 63.81 N but the force will increase with the egg in the car because more mass means more force, therefore the force will be greater. Adding mass to the car does affect the impact that the car receives when it hits the bottom of the track, because the momentum will increase.

To reduce the impact that the car hits the bottom of the track with, we can increase the time that it takes the car to hit the ground, we want less mass, less velocity and more time, this will help our egg survive.

Using lighter materials that can absorb more force on the time of impact, will help the car hit with a lower force, that is why we used cotton and balloons to absorb the force that the car hits the bottom of the track with. in order for the egg to survive the impact, the collision should take longer, that way less force is excerted on the egg on a single moment. Also the collision should occur at a lower velocity, that way the momentum becomes less. Also a sponge was used to decrease the velocity of the car as it went down the ramp, the sponge was barely touching the track so it created friction, that slowed the car down.

The force that the car had when it hit the bottom of the ramp, with the egg and the whole contraption on top of it was surprisingly 40.1 N which is actually less than the force the car hit the bottom of the ramp with when it didn't have anything on top, this was either because the light materials on top didn't add much weight to the car and they created air resistance, or because the balloon which was placed in front of the car slowed it down before the car hit the force sensor at the bottom of the track.

The time the impact of the car took at the bottom of the ramp was 0.0232 seconds, this was calculated by using the impulse formula, the impulse, 0.933NS, was divided by the force, 40.1N, this way we found the amount of time that the collision took. The change in momentum was -0.933N because the change in momentum is equal to the impulse.

Fortunately our egg survived and was not damaged, this occurred because of the increase of the amount of time that the impact took place on and the lack of mass being added. Our car was very effective but may be improved by adding protection to surround the egg completely so the egg won't fall out of the car or get damaged on its sides.