- or the International System of Units is the modern form of the metric system. It is the only

system of measurement with an official status in nearly every country in the world.

(a)  

- are the standard units of measurement defined by the International System of Units (SI)

for the seven base quantities of what is now known as the International System of Quantities

(a)  

- is a SI unit of measurement comprised of a combination of the seven base units.

(a)  

- is the conversion between different units of measurement for the same quantity,

typically through multiplicative conversion factors.

(a)  

- reducing the digits in a number while trying to keep its value similar. However

the result is less accurate, but easier to use.

(a)  

- arise from unknown and unpredictable variations in condition.

(a)  

- are errors which tend to shift all measurements in a systematic way so their mean

value is displaced.

(a)  

is the branch of science concerned with the nature and properties of non-living matter and

energy that are not dealt with by chemistry or biology, and the fundamental laws of the material universe. As

such, it is a huge and diverse area of study.

(a)  

Before the turn of the 19th century, physics concentrated on the study of mechanics, light, sound

and wave motion, heat and thermodynamics, and electromagnetism. Classical physics are fields

that were studied before 1900.

(a)  

embraces the atom and its component parts, relativity and the interaction of high

speeds, cosmology and space exploration, and mesoscopic physics, those pieces of the universe

that fall in size between nanometers and micrometers.

(a)  

(also known as the customary or imperial system).

(a)  

(also known as the metric system)

(a)  

are expressed in terms of units,

(a)  

is the degree of closeness between a measured value and true value. Accuracy depends on

using good techniques and highly accurate tools.

(a)  

is the representation of measurement of a single property in the same way of at least three

trials giving a way of judging how close to each other the repeated values. It depends on accuracy of the

instruments.

(a)  

is the conversion between different units of measurement for the same quantity,

typically through multiplicative conversion factors.

(a)  

- can be defined as total length moved. If you run around a circular track, you have covered a

distance equal to the circumstance of the track.

(a)  

- is a vector, representing a change in position. Displacement is defined as the straight-line

distance between two points.

(a)  

- of an object is the rate of change of its position with respect to a frame of reference, and is a

function of time.

(a)  

- can be thought of as the rate at which an object covers distance. A fast-moving object has a

high speed.

(a)  

- is a vector quantity that is defined as the rate at which an object changes its velocity.

(a)  

- is any motion of a body where gravity is the only force acting upon it.

(a)  

is a quantity that is fully described by both magnitude and direction.

(a)  

is a quantity that is fully described by its magnitude.

(a)  

is a useful method for determining the result of adding two (and only

two) vectors that make a right angle to each other.

(a)  

In physics, the term acceleration applies to decreases as well as increases in speed.

(a)  

- is a form of motion experienced by an object or particle (a projectile) that is

projected near the Earth's surface and moves along a curved path under the action of gravity only.

(a)  

- or flight path is the path that an object with mass in motion follows through space as a

function of time

(a)  

- is a movement of an object along the circumference of a circle or rotation along

a circular path.

(a)  

- as observed from or referred to some material system constituting a frame of

reference (as two adjacent walls and floor of a room).

(a)  

The horizontal distance covered by the projectile from the roof of the tower where it is fired to the

point where it touches the ground is called

(a)  

are those that have some physical origin, such as gravitational pull/ gravitational force,

Pressure Gradient Force (PGF) and Friction.

(a)  

is what a naive observer would supposed to explain a motion which is not real,

but which depends on the frame of observation.

(a)  

is a reference frame in which an object stays either at rest or at a constant

velocity unless another force acts upon it.

(a)  

When a body does not seem to be acting in accordance with inertia, it is in a (a)   or accelerating.

is a measure of how much matter is in the object.

(a)  

The typical measure of mass is the

(a)  

is a measure of the force of gravity acting on the object.

(a)  

is a graphic, dematerialized, symbolic representation of the body (structure,

element or segment of an element) in which all connecting "pieces" have been removed.

(a)  

Laws of motion were just one part of the monumental work that has monumental work that has made him

legendary.

(a)  

was instrumental in establishing observation as the absolute determinant of

truth, rather than “logical” argument.

(a)  

is the study of the forces that cause objects and

systems to move.

(a)  

A body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on

by a net external force. This is normally taken as the definition of inertia.

(a)  

If you apply more force to an object, it accelerates at a higher rate.

• If the same force is applied to an object with greater mass, the object accelerates at a slower rate

because mass adds inertia.

• According to Newton, an object will only accelerate if there is a net or unbalanced force acting upon it.

The presence of an unbalanced force will accelerate an object - changing its speed, its direction, or both

its speed and direction.

(a)  

• States that for every action (force) in nature there is an equal and opposite reaction.

• Represents certain symmetry in nature.

• Forces always occur in pairs, and one body cannot exert a force on another without experiencing a

force itself.

• We sometimes refer to this law loosely as “action-reaction,” where the force exerted is the action and

the force experienced as a consequence is the reaction.

• Newton’s third law has practical uses in analyzing the origin of forces and understanding which forces

are external to a system.

(a)  

is the support force exerted upon an object

that is in contact with another stable object.

(a)  

is the force that is transmitted through a

string, rope, cable or wire when it is pulled tight by

forces acting from opposite ends.

(a)  

is the force exerted by a surface as

an object moves across it or makes an effort to move across it.

(a)  

is a force that is applied to an object by a

person or another object.

(a)  

is the force with which the earth, moon,

or other massively large object attracts another object towards itself.

(a)  

It is a force that keeps an object at rest.

(a)  

- also called the scalar product, is the product of two vectors, obtained by performing a

specific operation on the vector components.

(a)  

- is an element of a vector space.

(a)  

– are quantities which require both magnitude and direction for their complete

description.

(a)  

– are quantities that can be expressed completely by a single number with

appropriate units.

(a)  

- is a measure of energy transfer that occurs when an object is moved over a distance by an

external force at least part of which is applied in the direction of the displacement.

(a)  

- is defined as the “ability to do work, which is the ability to exert a force causing displacement

of an object.”

(a)  

- is the amount of energy transferred or converted per unit time.

(a)  

- is one for which the work done is independent of path.

(a)  

- is one for which the work done depends on the path.

(a)  

- is energy an object possesses because of its position in a gravitational

field.

(a)  

- (also called spring energy) is potential energy stored as a result of

deformation of an elastic object, such as the stretching of a spring.

(a)  

- energy of interacting bodies or particles in a closed system remains constant.

(a)  

- A position defined relative to an object or system of objects.

(a)  

– The arithmetic mean position of all the points in the figure.

(a)  

– The average location of the weight of an object.

(a)  

- Composed of parts or elements that are all of the same kind.

(a)  

- is the vertical stretching and horizontal compression of objects into long thin

shapes in a very strong non-homogeneous gravitational field. It is caused by extreme tidal forces.

(a)  

– the product of the mass of the object and its velocity

(a)  

– the tendency of a body to continue in uniform motion along a straight path.

(a)  

– the product of the net force and the time interval

(a)  

– The change in momentum of a particle during a time interval equals the

impulse of the net force that acts on the particle during that interval.

(a)  

- is the event in which two or more bodies exert forces on each other in about a relatively

short time.

(a)  

- total kinetic energy and momentum are conserved.

(a)  

– Total momentum of an isolated system before collision is always

equal to total momentum after the collision. (P1 + P2 = Ptotal)

(a)  

- the total energy of an isolated system remains constant.

(KE1 + KE2 = KE1 ′ + KE2′)

(a)  

- the total momentum is conserved but total kinetic energy is not conserved

(a)