Physics - Keywords Flashcards
A vector quantity has …….
A magnitude (size) and a direction
A scalar quantity has …….
A magnitude (size) only
Distance is ……..
Just how far an object has moved
Displacement measures …….
The distance and direction in a straight line from an object’s starting point to its finishing point
Speed is …….
Just how fast you’re going with no regard to the direction
Velocity is …….
Speed in a given direction
Acceleration is ……
The change in velocity in a certain amount of time
Newton’s First Law states …….
’ if the resultant force on a stationary object is zero, the object will remain stationary. If the resultant force on a moving object is zero, it’ll just carry on moving at the same velocity (same speed and direction)
Mass is ………
The amount of stuff in an object
Weight is ……..
The force acting on an object due to gravity
Newton’s Third Law states………
’ when two objects interact, the forces they exert on each other are equal and opposite ‘
Momentum is …….
A property that all moving objects have
The law of conservation states …….
Energy can be stored, transferred between stores and dissipated but it can never be created or destroyed
Amplitude is……..
The maximum height of the wave from a displacement point
Wavelength is….
The distance from peak to peak