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: 

(http://s20.postimg.org/ls3dtps2h/Speed_Worded.png)         (http://s20.postimg.org/3kb56keah/Speed.png)

The equation for velocity is:

(http://s20.postimg.org/a49bz62xl/Velocity_Worded.png)   (http://s20.postimg.org/el6abl6jd/Velocity.png)

The equation for average speed is:

(http://s20.postimg.org/lvx79yxjx/Average_Speed_Worded.png)     (http://s20.postimg.org/48febrnmh/Av_Speed.png)

The equation for acceleration is:

(http://s20.postimg.org/jdbi9abtp/Acceleration_Worded.png)     (http://s20.postimg.org/mmpxfqzx5/Acceleration.png)

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Force, Weight and Density

The equation for Force is: 

(http://s20.postimg.org/l2p6v3gwt/Force_Worded.png)     (http://s20.postimg.org/ehcgvc121/Force.png)

The equation for Weight is:

(http://s20.postimg.org/wqj8pn61p/Weight_Worded.png)           (http://s20.postimg.org/c8yadzty1/Weight.png)

The equation for Density is:

(http://s20.postimg.org/ivky76bmh/Density_Worded.png)     (http://s20.postimg.org/co9k70fvd/Density.png)

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Momentum

The equation for momentum is:

(http://s20.postimg.org/49yiwo47x/Momentum_Worded.png)                       (http://s20.postimg.org/3lpodq5i1/Momentum.png)

The equation for change in momentum is:
(http://s20.postimg.org/yty9b1v8d/Chamge_in_momentum_Worded.png)        (http://s20.postimg.org/ndn8z9ro9/Change_in_mom.png)

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

(http://s20.postimg.org/5hcgovucd/Force_change_in_mom_Worded.png)                       (http://s20.postimg.org/cw1sh9g7t/force_change_in_mom.png)

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:

(http://s20.postimg.org/lpxac3skd/Work_Worded.png)                          (http://s20.postimg.org/vyprhxgm1/Work_Done.png)

The equations for Pwer are:

(http://s20.postimg.org/93ia1j0pl/Power_1_Worded.png)                                   (http://s20.postimg.org/9li0v4fo9/Power_1.png)

(http://s20.postimg.org/6d8y4c40t/Power_2_Worded.png)                  (http://s20.postimg.org/tdflgo1uh/Power_2.png)

The equation for efficiency is:

(http://s20.postimg.org/q2r8gsbx9/Efficiency_Worded.png)           (http://s20.postimg.org/jeumu6sex/Efficiency.png)

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Energy

The eqaution for Kinetic Energy is:

(http://s20.postimg.org/4hqr6x4kd/Kinetic_Energy_Worded.png)       (http://s20.postimg.org/54pnwg1g9/Kinetic_Energy.png)

The equation for Gravitational Potential Energy is:

(http://s20.postimg.org/5iqzw1ljx/GPE_Worded.png)

(http://s20.postimg.org/hn69d0yft/GPE.png)

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:

(http://s20.postimg.org/gnfyhbja5/Moments_Worded.png)                   (http://s20.postimg.org/emu0a8cih/Moment.png)

The priciple of moments states that:

(http://s20.postimg.org/3uruhe7od/Principle_of_Moments_Worded.png)

(http://s20.postimg.org/3xgbhz0pl/Principle_of_Moments.png)

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