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IEB Matric Physics Definitions actual solution
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IEB Matric Physics Definitions actualsolution 2024 2025
Vector - answer ✅✅A physical quantity that has both magnitude and direction.
Scalar - answer ✅✅A physical quantity that has magnitude only.
Resultant vector - answer ✅✅The single vector which has the same effect as the
original vectors acting together.
Distance - answer ✅✅The length of path travelled. Distance is a scalar quantity.
Displacement - answer ✅✅A change in position.
Speed - answer ✅✅The rate of change of distance. Speed is a scalar quantity.
Velocity - answer ✅✅The rate of change of position (or displacement). Velocity is
a vector quantity.
, Acceleration - answer ✅✅The rate of change of velocity.
Weight (Fg) - answer ✅✅The gravitational force the Earth exerts on any object
on or near its surface.
Normal force (FN) - answer ✅✅The perpendicular force exerted by a surface on
an object in contact with it.
Frictional force due to a surface (Ff) - answer ✅✅The force that opposes the
motion of an object and acts parallel to the surface with which the object is in
contact.
Newton's first law - answer ✅✅An object continues in a state of rest or uniform
(moving with constant) velocity unless it is acted upon by a net or resultant force.
Inertia - answer ✅✅The property of an object that causes it to resist a change in
its state of rest or uniform motion.
Newton's second law - answer ✅✅When a net force, Fnet, is applied to an object
of mass, m, it accelerates in the direction of the net force. The acceleration, a, is
directly proportional to the net force and inversely proportional to the mass.
Newton's third law - answer ✅✅When object A exerts a force on object B, object
B simultaneously exerts an oppositely directed force of equal magnitude on
object A.
Momentum - answer ✅✅The product of the mass and velocity of the object.
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