74
Lesson 74 of 84 · Forces
ExperimentMotion: Start and Stop (Part 3)
What You'll Learn
Objects in motion tend to keep moving. Objects at rest tend to stay still. Push something to start it!
Key Words
- direction
- simple machine
- lever
Materials Needed
- toy cars
- ramps
- string
- weights
- tape
- ruler
Safety First
- Keep small objects away from young children.
Steps
Step 1 — Read
Look at the picture and read the labels.
Step 2 — Do
Drop a feather and a coin at the same time from the same height. Which hits the ground first?
Step 3 — Observe
Draw a picture of what you observe.
Step 4 — Record
Share your results with a partner.
Check Your Understanding
Question 1
1 of 3Which is a simple machine?