#### Science - 2019-20

# PH.5 b - Uniform Circular Motion

The student will** investigate** and **understand** the
interrelationships among mass, distance, force, and time through mathematical
and experimental processes. Key concepts include

b) uniform circular motion.

**Bloom's Levels:** Analyze; Understand

*Adopted: 2010*

### BIG IDEAS

- I can explain why roller coasters don't fall off the track when they go upside down.

### UNDERSTANDING THE STANDARD

The concepts developed in this standard include the following:

- An object moving along a circular
path with a constant speed experiences an acceleration directed toward the
center of the circle.
- The force that causes an object to move in a circular path is directed centripetally, toward the center of the circle. The object’s inertia is sometimes falsely characterized as a centrifugal or outward-directed force.

### ESSENTIALS

In order to meet this standard, it is expected that students will

b) distinguish between centripetal and centrifugal force.

describe the forces involved in circular motion.

### KEY VOCABULARY

*Updated: Dec 01, 2017*