Newton Flashcards
Define a vector:
A vector is a physical quantity that has both magnitude and direction.
Define a scalar:
A scalar is a physical quantity that only has magnitude.
Define a resultant vector:
A resultant vector is the single vector which has the same effect as all the original vectors
acting together.
Define distance:
Distance is the length of path travelled.
Define displacement:
Displacement is the change in position of an object..
Define speed:
Speed is the rate of change of distance.
Define velocity:
Velocity is the rate of change of displacement.
Define acceleration:
Acceleration is the rate of change of velocity.
Define inertia:
Inertia is the property of an object that causes it to resist a change in its state of rest or
uniform motion.
Define weight:
Weight is the gravitational force the earth exerts on any object on or near its surface.
Define normal force:
Normal force is the perpendicular force exerted by a surface on an object in contact with it.
Define friction:
Friction is the force that opposes the motion of an object.
State Newton’s first law:
Newton’s First Law – An object continues in a state of rest or uniform velocity unless it is
acted upon by a net or resultant force.
State Newton’s second law:
Newton’s second law - When a net force, is applied to an object of mass, it
accelerates in the direction of the net force. The acceleration, is directly proportional to
the net force and inversely proportional to the mass.
State Newton’s third law:
Newton’s Third Law – When object A exerts a force on object B, object B simultaneously
exerts an oppositely directed force of equal magnitude on object A.
