Normal Force
The normal force is the force exerted by a surface to support the weight of an object resting on it. It acts perpendicular to the surface and prevents the object from falling through the surface.
Key Points to Remember
- The normal force is always perpendicular to the surface.
- It is a contact force, meaning it only exists when the object is in contact with the surface.
- The magnitude of the normal force is equal to the weight of the object when the object is at rest or moving at a constant velocity in the vertical direction.
- The normal force can vary based on the angle of the surface and other factors affecting the contact between the object and the surface.
Examples of Normal Force
Some examples of the normal force in action include:
- A book resting on a table.
- A person standing on the ground.
- A car parked on a level road.
Study Guide Questions
.◂Science Worksheets and Study Guides Third Grade. Main Parts of Plants
Study Guide
Main Parts of Plants 
Activity Lesson
Main Parts of Plants Worksheet/Answer key
Main Parts of Plants Worksheet/Answer key
Main Parts of Plants Worksheet/Answer key
Main Parts of Plants Worksheet/Answer key
Main Parts of Plants Worksheet/Answer key
This and That Vocabulary/Answer key
Main Parts of Plants Vocabulary/Answer key
Main Parts of Plants
Activity LessonWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyWorksheet/Answer keyVocabulary/Answer keyVocabulary/Answer keyThe resources above cover the following skills:
Concepts of Life Science (SC1, SC2, SC3)
The student demonstrates an understanding of the structure, function, behavior, development, life cycles, and diversity of living organisms by observing and comparing external features of plants and of animals that may help them grow, survive, and reproduce.