Skip to content
free
K
1
2
practice
Home
Math
English
Science
Social Studies
Contact
Language
English
Español
Sign In
/
Science
/
Grade 4
/
Collisions and Changes in Energy
Worksheet
Grade Level
Grade 4
4.7 Collisions and Changes in Energy
0%
Skill Level
🔴 Hard
00:00
Progress to Next Level
25% to Medium
Easy
Medium
Hard
Mastery
100%
Design problem: A case or bumper should protect an object during a collision like this: a sled bumps into a snow pile. Which feature would help most?
A
A brittle material that cracks immediately
B
A soft or springy material that can change shape and spread out the energy transfer
C
A sharp edge that focuses the collision in one place
D
No padding because energy never transfers in collisions
Submit Answer