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PHY102-MOTIONX: Forces, Energy, and Motion — The Ultimate Physics Foundations Guide

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This comprehensive review sheet explores the core principles of physics — from vectors, forces, and motion to energy and momentum. It explains how physical quantities are classified as vectors or scalars, how forces interact through contact and non-contact means, and how Newton’s Laws govern all motion. Students learn to calculate weight, work done, pressure, acceleration, and momentum, and understand real-world phenomena such as terminal velocity, upthrust, and equilibrium. With clear equations, practical examples, and essential definitions, this summary builds a strong conceptual foundation for mastering mechanics, motion, and energy — the backbone of all physical science learning.

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PHY102-MOTIONX: Forces, Energy, and Motion —
The Ultimate Physics Foundations Guide
vector - A quantity that has magnitude and direction

scalar - A physical quantity that has magnitude only.

contact force - a push or pull on one object by another that is touching it

non-contact force - a force that one object can apply to another object without touching
it

gravitational forces - the force of attraction between any 2 objects with mass: the greater the
mass, the greater the attraction

Weight - the force of gravity on an object

Mass - A measure of the amount of matter in an object

Weight equation - W=mg

earth's gravitational field strength - 9.8N/kg

Resultant force - The resultant of a system of force is the vector sum of all forces.

balanced forces - Equal forces acting on an object in opposite directions

Work done equation - force x distance

work done - energy transferred

Force, spring constant, extension - F=ke

elastic potential energy - E = 1/2ke^2

moment equation - M = Fd

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