# Slide Preview for Physics 4 - Explaining Motion

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## Powerpoint Description:

This slideshow covers the entire Explaining Motion (P4) unit, including: contact and non-contact forces, forces acting as pairs, Newton's 3rd Law of Motion, forces represented as vectors, weight and mass, Newton's observations, distance vs displacement, speed vs velocity, measuring distance and time, calculating speed, estimations of everyday speeds, different ways of measuring speed, vector and scalar quantities, distance-time graphs, acceleration, velocity-time graphs, balanced and unbalanced forces, Newton's 1st Law of Motion, resultant forces, drawing forces as scale vector diagrams, momentum, conservation of momentum, change in momentum and time, circular motion, balancing turning moments, the principle of moments, levers and gears, Newton's 2nd Law of Motion, F=ma, inertial mass, approximate values of acceleration, measuring reaction times, stopping distances, factors affecting thinking and braking distances, different types of energy, the conservation of energy, energy changes, work done and how to calculate it, calculating kinetic energy and gravitational potential energy, different examples of doing work and the resulting changes in stored energy.Click here to register and to download this PowerPoint file

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