# MECHANICS

I made a spider diagram to help me in mechanics, i used Edecel AS physics students' handbook to help me make this.

It helps me to put all the basics of it into a brain storm. :)

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• MECHANICS
• MOTION
• speed = distance/ time
• velocity= displacement/ time taken
• a = v-u/t
• vectors
• vectors can be represented by arrows. length of the arrow represents the magnitude,and the direction of the arrow represents the direction of the arrow.
• vectors  can be drawn as triangles whenever more than one vector is applied.
• scalar
• only has either size or magnnitude
• acceleration is defined as the rate of the change of velocity with time
• FORCES
• ENERGY AND POWER
• law of conservation of energy
• energy cannot be created nor destroyued
• work done = force x distance moved in direction of force
• potential energy
• NounThe energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
• efficiency
• efficiency= useful energy got out (kinetic energy  /energy put in
• power
• power = energy transferred/ time taken
• power = work done / time taken
• efficiency= useful energy output/ energy input x 100%
• efficiency
• efficiency= useful energy got out (kinetic energy  /energy put in