ALL Physical Sciences Definitions For Physics Paper 1 needed to ace Grade 12 exams. Includes terminology from
1. Newton’s Laws and Application
2. Momentum and Impulse
3. Vertical Projectile Motion
4. Work, Energy and Power
5. Doppler Effect
6. Electrostatics
7. Electric Cir...
9. Optical Phenomena and Properties of Materials …………………… 11
Mechanics: Newton’s Laws and Application
normal force N … 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
frictional force f … the force that opposes the motion of an object and which acts parallel to
the surface; f = μN
static frictional fs … the force that opposes the tendency of motion of a STATIONARY object
force relative to a surface. The static frictional force is a maximum (f smax) just before
the object starts to move across the surface. fs = μsN
kinetic frictional fk … the force that opposes the motion of a MOVING object relative to a
force surface; fk = μkN
force diagram a diagram that shows the relative magnitudes and directions of forces acting
on a body/particle that has been isolated from its surroundings
free-body This is a diagram that shows the relative magnitudes and directions of forces
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