This a great project for Impulse & Momentum. It takes the student step-by-step through researching, designing, explaining, and analyzing their concepts necessary for a successful drop. They build a crate that will hopefully decrease the force the egg receives when it lands.
This has them explain their structure, the reasons for each item used, the calculations, and apply concepts to other situations.
Rubric only assesses 10% of the test grade on egg breakage, allowing for the assessment to more applicably cover their understanding of the concepts that apply knowledge while maintaining an easy to grade format.