Nano PHYSICS . MECHANICS . WORK AND ENERGY . WORK-ENERGY THEOREM

From Newton's Second Law

Start with net force equals mass times acceleration and connect acceleration to speed change along the motion to obtain the change in kinetic energy.

Physics · Mechanics · Work and Energy · Work-Energy Theorem · From Newton's Second Law
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Unsigned visitors can show & copy prompts for Steps 1-3. Signed-in free accounts can also Run with AI for Steps 1-2. Paid accounts unlock everything (Steps 1-6 + Help prompts + AI).
Steps 1-3 Free Steps 4-6 Paid
STEP 1
Orient: from newton's second law
Free
Establish the relationship between net work and kinetic-energy change.
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Goal: define the work-energy theorem using net work, kinetic energy, and units.
STEP 2
Conceptual grounding: build the work-energy model
Free
Build a workflow for states, work terms, signs, net work, and speed change.
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Goal: identify all work contributions and connect their sum to kinetic-energy change.
STEP 3
Real-world connection: interpret net work and speed change
Free
Apply work-energy reasoning to pushes, friction, stopping, ramps, and conservative-force previews.
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Goal: explain speed, stopping distance, unknown force, and conservative-force previews in physical contexts.
STEP 4
Check your understanding: diagnostic mini-quiz
Paid
Attempt each question before revealing the work-energy reasoning.
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Goal: identify and correct net-work, sign, missing-force, and speed-relation errors before they become calculation errors.
STEP 5
Practice: solve increasingly rich work-energy situations
Paid
Apply the model to situations that grow in complexity.
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Goal: write concise, physically justified work-energy theorem solutions.