This apparatus allows students to investigate conservation of momentum and kinetic energy change in collisions. It can also be used to compare elastic and inelastic collisions.IncludesCurved aluminum track with adjustable target support2 steel balls1 glass ball1 hollow wooden ball1 plumb lineActivity guide Shipping Details Shipping Type: parcel Free Shipping: true Specifications Maximum Age: None Maximum Grade Level: None Allergens: Contains No Allergens Certifications: Not Applicable Grade Level: Grades 5-12 SUOM Description: Each Brand Name: United Scientific Description: Two Dimension Collision