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Fun Science Projects & Experiments - Force and Energy

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A collection of science projects, videos and experiments for various grades and topics.

Science Projects or Science Experiments: Grades 4 & 5

Force and Energy

Eureka! Episode 1 - Inertia
This program introduces the series and sets forth the concept of inertia, the first law of physics: Things like to keep on doing what they're already doing.
Eureka! Episode 2 - Mass
Building on the concept of inertia, Eureka! adds the factor of mass, tells how it's measured, and shows how it differs from size. Concept: Inertia increases with mass

Eureka! Episode 3 - Speed
The concept of speed is introduced to the inertia-mass relationship. Concept: Force varies with mass and rate of change of speed
Eureka! Episode 4 - Acceleration Part I
With the examples of a bicycle and a baseball player, an important rule of physics becomes apparent. Concept: Force = mass x acceleration.

Eureka! Episode 5 - Acceleration Part II
An animated locomotive helps explain how acceleration works and is calculated. The importance of reasonable units is stressed. Concept: Acceleration = m/s2

Try the free Mathway calculator and problem solver below to practice various math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.
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