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