Skip to content
free
K
1
2
practice
Home
Math
English
Science
Social Studies
Contact
Language
English
Español
Sign In
/
Science
/
Grade 6
/
Plan a Fair Collision Test
Worksheet
Grade Level
Grade 6
6.57 Plan a Fair Collision Test
0%
Skill Level
🔴 Hard
00:00
Progress to Next Level
25% to Medium
Easy
Medium
Hard
Mastery
100%
Which procedure controls all other variables best so release mechanism is the only factor that changes?
A
Change release mechanism, but measure initial speed consistency with different tools (ruler for some trials, video for others).
B
Vary only release mechanism. Keep ramp height, cart mass, and track surface constant. Measure initial speed consistency using a meterstick, then do 5 trials per setup to reduce random error.
C
Change release mechanism, but release from different starting points whenever it seems easier.
D
Change release mechanism and also change the surface material during the test.
Submit Answer