Physics and Math Chapter 1: Kinematics and Dynamics Flashcards
What are the SI units for length, mass, time, current, amount of substance, temperature and luminous intensity?
length = meter mass = kilogram time = second current = ampere amount of substance = mole temperature = kelvin luminous intensity = candela
What are vectors?
Vectors are physical quantities that have both magnitude and direction.
What are scalars?
Quantities without direction
What is the difference between displacement and distance?
Displacement is a vector quantity – path independent and looks at the straight line distance between the start and end locations
Distance is scalar – path dependent
What is a force?
Any push or pull that has the potential to result in an acceleration
What is gravity?
The attractive force between two objects as a result of their masses.
What is friction?
opposes motion as a function of electrostatic interactions at the surfaces
Which is a constant value, static or kinetic friction?
Static friction can take on many values, whereas kinetic friction is a constant value
What is the coefficient of friction?
Dependent on the two materials
Which is higher, the coefficient of static or kinetic friction?
coefficient of static friction is always higher
What is mass a measure of?
The inertia of an object, the amount of material
What is weight a measure of?
force experienced by a given mass due to the gravitational attraction to the earth
What is Newton’s first law?
Law of inertia – object will remain at rest or move with a constant velocity if there is no et force on the object.
What is Newton’s second law?
Any acceleration is the sum of the focus acting on the object and the mass
What is Newton’s third law?
Any two objects interacting with each other experience equal and opposite forces as a result of their interaction
