CHS Yr 10 Science Fast and Furious
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37 Terms
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scalar measurement
A measurement that only has magnitude and no direction.
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examples of Scalar
Mass, Speed, Temperature, Distance
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vector measurement
A measurement that has both magnitude and direction.
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examples of vector measurements
Velocity, Acceleration, Momentum, Displacement and Forces
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Distance
The total length of the pathway taken between the starting and finish point of a journey.
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displacement
The location of something relative to the journey’s starting location. Not based on the path taken between the two points.
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Formula for Calculating Speed on a Distance Time Graph
Distance/Time, Rise/Run, Gradient
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Formula for Acceleration
Change in Speed/Change in Time
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Acceleration on a Velocity Time Graph
The slope/line of the graph
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The area under the Slope of the Line represents in a Velocity Time Graph
Displacement
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representation of constant speed on a Velocity Time Graph?
Straight Parallel Line with 0 Acceleration
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non-contact force
A force that can act on an object without touching it.
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contact force
A force that acts on an object through touching it
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Force Field
The invisible area at which a force can act
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Gravity
ravity is a Non-Contact force that acts on all objects by attracting them together based on their mass.
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What can alter the size of gravitational forces?
Distance between and mass of objects
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What is mass?
the amount of matter in an object, measured on a scale in kg, g, tonnes…
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What is weight?
gravity pulling on mass and is a force, it is measured with a spring balance and in Newtons
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Calculation for Weight
Force(w)= Mass x Gravity
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Gravitational Force Formula
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Acceleration Formula
Final Velocity - Initial Velocity
\-----------------------------------
Time
\-----------------------------------
Time
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Equations of Motion
Final velocity (v) = initial velocity (u) + acceleration (A) x time (t)
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V^2 = u^2 + 2 x a x displacement (s)
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s = u x t + 1/2 x a x t^2
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V^2 = u^2 + 2 x a x displacement (s)
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s = u x t + 1/2 x a x t^2
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force
A push, pull or twist that either increase/decrease the speed, Change direction or change the shape of an object.
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Newton’s First Law of Motion
Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.
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inertia
A property of matter by which it remains at rest or in unchanging motion unless acted on by some external force. \`
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Newton’s Second Law of Motion
An object will accelerate if an unbalanced force is applied to it
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Newton’s Third Law
For every force there is a force of the same size acting in the opposite direction.
For every action there is an equal and opposite reaction
For every action there is an equal and opposite reaction
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Formula for Weight
Mass x Gravity
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field
A region in space where an object would experience a force
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work
The product created when a force is applied to an object in order to move or change the object.
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energy
The ability to do work.
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formula for work
Force x Distance
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2 forms of Energy
Kinetic and Potential
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kinetic energy
The energy found within an object because of tis mass and its velocity.
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formula for Kinetic Energy
1/2 x mass x velocity^2
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Gravitational Potential Energy?
The energy an object has because of its mass and its position in a gravitational field.
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formula for Gravitational Potential Energy
Mass(kg) x Gravity(ms^-2) x height (m)
