Lesson 10 of 10

🛠 Forces & Motion

🎯 Grades 3–5 ⏱ ~30 min 💚 Intermediate

What You'll Learn

  • Define force and explain how it changes motion
  • Understand gravity, friction, and applied force
  • Use Newton's 2nd Law (a = F/m) to predict acceleration
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Course Complete!

You finished 3rd–5th Grade Science! You explored the scientific method, living things, plants, animals, weather, matter, simple machines, light, the water cycle, and forces. Real science is in everything around you!

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Quick Check

1. What is friction?

AThe force that pulls objects toward Earth
BA force that resists motion between two surfaces
CA push you apply to an object

2. A 10 N force acts on a 2 kg box. What is the acceleration?

A20 m/s²
B5 m/s²
C8 m/s²

3. Which surface would cause the most friction?

AIce
BSmooth wood
CRough carpet
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