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Lesson 78 of 84 · Forces
ExperimentMomentum and Collisions (Part 3)
What You'll Learn
Momentum is mass times velocity. A heavy truck moving slowly can have the same momentum as a light car moving fast. Momentum is conserved in collisions.
Key Words
- work
- simple machine
Materials Needed
- blocks
- spring scale
- stopwatch
- pencils
- toy cars
Safety First
- Dispose of materials properly after the experiment.
- Handle glass items carefully to avoid breakage.
Steps
Step 1 — Read
Read about Forces and write down three key facts.
Step 2 — Do
Test Newton's Third Law: blow up a balloon, attach it to a straw on a string, and release. Measure how far it travels with different amounts of air.
Step 3 — Observe
Watch carefully for any changes and note the time.
Step 4 — Record
Create a data table to organize your measurements.
Check Your Understanding
Question 1
1 of 3What do magnets have?