Newton's Laws and Application of Newton's Laws Flashcards
Kinetic Frictional Force
Kinetic Frictional Force (fk) is the force that opposes the motion of a moving object relative to a surface.
Newton’s Second Law of Motion
Newton’s Second Law of Motion states when a resultant/net force acts on an object, the object will accelerate in the direction of the force at an acceleration directly proportional to the force and inversely proportional to the mass of the object.
Newton’s Law of Universal Gravitation
Newton’s Law of Universal Gravitation states that each body in the universe attracts every other body with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centres.
Newton’s First Law of Motion
Newton’s First Law of Motion states that a body will remain in its state of rest or motion at constant velocity unless a non-zero resultant/net force acts on it.
Normal Force
Normal Force N, as the force or the component of a force which a surface exerts on an object with which it is in contact, and which is perpendicular to the surface.
Newton’s Third Law of Motion
Newton’s Tird Law of Motion states that when one body exerts a force on a second body, the second body exerts a force of equal magnitude in the opposite direction on the first body.
Acceleration
Acceleration is the rate of change in velocity (vector).
a=△v/△t
Resultant Vector (Force)
A Resultant Vector (Force) is the vector (force) sum of two or more vectors (forces), i.e. a the single vector (force) having the same effect as two or more vectors (forces)
together.
Vector
A vector is a physical quantity with magnitude and direction.
Scalar
A scalar is a physical quantity with magnitude only.
One-dimensional motion
One-dimensional motion is motion along a straight line. The object may move forward or backward along this line.
Distance
Distance is the total path length travelled (scalar).
Displacement
Displacement is the difference in position in space (vector).
Average Speed
Average Speed is the total distance travelled per total time (scalar).
Average Velocity
Average Velocity is the rate of change of position (vector).
v=△x/△t