Class prep · TJ AP Physics 1

Draw the model,then explain the motion.

An independent algebra-based AP Physics 1 prep course, from motion and forces through energy, momentum, rotation, oscillations and fluids. Connect diagrams, measurements and physical explanations. Every problem has a full worked solution. Built by Neil Kothari, a TJ alumnus.

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$395 covers the full school year. The first lesson is free.

Try one. This is a test-level question from the course.

Problem 1

Test level
Multiple choice
No calculator
4 pts

A displacement of $-9\,\mathrm m$ is followed by a displacement of $+4\,\mathrm m$ on the same fixed axis. What is the net displacement?

original problems, each with a worked answer: 624; original problems, each with a worked answer
at test level or beyond: 432; at test level or beyond
short lessons, one for every topic: 48; short lessons, one for every topic
units, all open now: 8; units, all open now

Free lesson

Lesson 1.1: Signed Quantities and Vector Sums

Represent directed changes consistently and distinguish a route from its resultant.

Start with signed quantities, vector sums and the distinction between distance and displacement. Use a declared coordinate direction to check each result.

Problem 2

Core
True or false
No calculator
2 pts

A tracked object moves $5\,\mathrm m$ east and then $8\,\mathrm m$ west along one straight line. East is positive. Evaluate: "Both its displacement and its traveled distance are negative."

Problem 3

Core
Multiple choice
No calculator
4 pts

Which listed quantity requires direction as well as magnitude for a complete one-dimensional description?

Open the rest of this lesson, free

The full lesson and all 13 of its problems, with every worked answer.

How it works

Class prep that works alongside class

AP Physics 1 preparation for students in grades 9 to 12. Work alongside your school course or study the material in sequence with algebra and basic trigonometry. Each lesson starts with a concrete example, develops the idea, and shows how to check your reasoning before you try the practice.

Original problems in several formats: true or false, multiple choice, multi-part and free response.
Each one is marked core, test level or beyond.
Choose a physical system, interpret motion and force diagrams, and justify the assumptions behind each calculation.
A worked answer for every problem, ending with the mistake that most often costs points.
Lessons and original diagrams that connect physical models, equations and observations.

What is inside

1Kinematics6 lessons · 78 problems
2Force and Translational Dynamics6 lessons · 78 problems
3Work, Energy, and Power6 lessons · 78 problems
4Linear Momentum6 lessons · 78 problems
5Torque and Rotational Dynamics6 lessons · 78 problems
6Energy and Momentum of Rotating Systems6 lessons · 78 problems
7Oscillations6 lessons · 78 problems
8Fluids6 lessons · 78 problems

The front entrance of Thomas Jefferson High School for Science and Technology

Who built it

Neil Kothari

TJHSST alumnus · Co-founder, EduAvenues · 10+ years in TJ preparation

Neil is a TJ alumnus and has spent more than a decade working with TJ students and their families. He built this course so students can connect motion, forces, energy, experimental design and evidence. Every problem is written for the course and every answer is checked before it goes in.

Tuition

$395for the full school year

One tuition covers every unit of the course. All 8 units are open now. The Signed Quantities and Vector Sums lesson stays free for everyone.

All 8 units: 48 lessons and 624 original problems
A worked answer for every problem
Access through the end of the school year

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