Physics Formulae (Yr 11 NI)

All formulae and equations needed for CCEA Physics P1

Yr 11 in Northern Ireland, so Yr 10 in England

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Speed and Velocity

The equation for speed is:

The equation for velocity is:

The equation for average speed is:

The equation for acceleration is:

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Force, Weight and Density

The equation for Force is:

The equation for Weight is:

The equation for Density is:

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Momentum

The equation for momentum is:

The equation for change in momentum is:

This equation sometimes has to be rearranged in terms of force:

The Principle of Conservation of Momentum states:

In an isolated system,the total momentum of two objects before a collision is equal to the total momentum of the two objects after the collision.

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Work and Power

The eqaution for Work done is:

The equations for Pwer are:

The equation for efficiency is:

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Energy

The eqaution for Kinetic Energy is:

The equation for Gravitational Potential Energy is:

The Principle for conservation of energy states:

Energy cannot be created or destroyed, only transferred from one form to another.

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Moments

The equation to find a moment of an object is:

The priciple of moments states that:

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