# Physics mindmap

- Created by: awild1
- Created on: 15-06-20 14:40

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- Physics
- Scalars and Vectors
- Scalar - something that can be measured without a direction
- Examples: distance, speed, mass, temperature
- Scalar quantities - have size and magnitude but direction not speicified

- Scalar - something that can be measured without a direction
- Contact and Non-Contact Forces
- Contact - if a force is felt only by objects touching
- Examples: friction, air resistance, tension, thrust

- Non-Contact - if a force is felt without the objects having to touch
- Examples: magnetic force, gravitational force, electrostatic force

- Contact - if a force is felt only by objects touching
- Work Done
- When work is done, energy has been transferred from one energy store to another.
- energy transferred = work done

- Balanced forces - moves at same speed in same direction
- Unbalanced forces - changes speed and direction in the direction of resultant force

- When work is done, energy has been transferred from one energy store to another.
- Parallelogram and resolution of forces
- Parallelogram - quadrilateral with two pairs of parallel sides and opposite angles and opposite side lengths are equal.
- Resultant force
- Overall force on an object
- All forces acting on object added together - F1 + F2 = F3

- Overall force on an object

- Forces and Elasticity
- Elastic potential energy is stored if an elastic object is stretched or squashed.
- Extension = stretched length - original length
- Extension of stretched object is directly proportional to the force applied so f=ke
- f - force(N)
- k - spring constant(N/m)
- e - extension(m)
- When extension is no longer proportional to force, it is known as limit of proportionality

- Extension of stretched object is directly proportional to the force applied so f=ke

- Extension = stretched length - original length

- Elastic potential energy is stored if an elastic object is stretched or squashed.
- Stretching a spring - REQUIRED PRACTICAL
- Attach two clamps to a stand
- Line the 0cm mark on the ruler up with the top of the spring
- Measure the length of the spring before the mass was placed on it and after
- Take the original length and subtract it from the stretched length - you will be given the extension of the spring

- Measure the length of the spring before the mass was placed on it and after

- Line the 0cm mark on the ruler up with the top of the spring

- Attach two clamps to a stand

- Scalars and Vectors
- Vector - anything we can measure in science that has a direction
- Examples: displacement, velocity, acceleration, force.
- Scalars and Vectors
- Scalar - something that can be measured without a direction
- Examples: distance, speed, mass, temperature
- Scalar quantities - have size and magnitude but direction not speicified

- Scalar - something that can be measured without a direction
- Vector quantities - have magnitude and a specific direction

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