What we will do What we will learn 12Px 10 Poutū-te-Rangi 2017

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Presentation transcript:

What we will do What we will learn 12Px 10 Poutū-te-Rangi 2017 Definitions: Energy, Work, Potential Energy, Kinetic Energy What these things actually ARE See a proof of GPE=mgh Where the formula comes from See a proof of KE=1/2mv2 DEFINE Power and therefore not have to prove the formula P=W/t WHY the formula of Power is W/t or E/t Use a verbal question to help remember the unit for Power A silly (and so memorable) way to remember the unit for Power Set new HW, a new date and have HRT How to stay on track for 10 November

12PxHEN – Seating Plan Front of lab - Whiteboard

HW item Skills practiced Mex: Pages 90 - 94 Due Tuesday 7 Mar 2017 Momentum: definition Momentum: change of … Mex: Pages 95 - 98 Impulse and the link to momentum Mex: Pages 100 - 104 Conservation of momentum Mex: Pages 107 - 111 Due Monday 13 Mar 2017 Projectile motion. Mex: Pages 114 - 117 Due Wednesday 15 Mar 2017 Circular motion Mex: Pages 119 - 121 Due Tuesday 21 Mar 2017 Energy, Work and Power

Homework Marking No. of marks What for 1 Having sketches & FULL working for all Neat presentation and down-page format Answer underlined and units given Self marked and all correct – eventually In on time and signed for (“This is my own work”…….) Total A mark out of five that will contribute to the “homework” grade in the reports

Work, Energy and Power WORK is defined as the change of energy from one type to another ENERGY is defined as the ability to do work. Gravitational Potential Energy is the work done lifting an object up a height in a gravitational field. Kinetic Energy is the WORK DONE accelerating a mass from rest to its velocity.