In physics, motion is a change in position of an object with respect to time. Motion is typically described in terms of velocity, acceleration, displacement, and time.

In kinematics, velocity is the speed of an object and a specification of its direction of motion. Speed describes only how fast an object is moving, whereas velocity gives both how fast and in what direction the object is moving. Velocity is a vector physical quantity

Velocity – Rate of Change in Displacement or Change in Displacement / Time taken. It is measured in metres per second (m/s or ms-1), and its symbol is v. Symbolically, the definition is v = s / t.

Acceleration – Rate of change of Velocity or Change in Velocity / Time taken. It is measured in metres per second squared (m/s2 or ms-2), and its symbol is a. Symbolically the definition is a = v / t.

Displacement - Change in position, that is, where an object is in relation to some reference point. It is measured in metres (m), and its symbol is usually , x, or s or sometimes d.

A displacement may be also described as a 'relative position': the final position of a point (Rf) relative to its initial position (Ri),

Any motion in a curved path represents accelerated motion, and requires a force directed toward the center of curvature of the path. This force is called the centripetal force which means "center seeking" force. The force has

the magnitude

Centrifugal Force, in physics, the tendency of an object following a curved path to fly away from the center of curvature. Centrifugal force is not a true force; it is a form of inertia (the tendency of objects that are moving in a straight line to continue moving in a straight line). Centrifugal force is referred to as a force for convenience—because it balances centripetal force, which is a true force. centrifugal force is given by the formula wv2/gr. Where w is the weight of the object in pounds, v the velocity in feet per second, g the acceleration of gravity (32 feet per second per second), and r the radius of the circle in feet.

In physics, a force is any influence that causes an object to undergo a certain change, either concerning its movement, direction, or geometrical construction. It is measured with the SI unit of newtons and represented by the symbol F. In other words, a force is that which can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate, or which can cause a flexible object to deform.

The work done by a constant force of magnitude F on a point that moves a distance d in the direction of the force is the product,

power is the rate at which work is done, or the rate at which energy is consumed. The higher the rate at which work is done, the faster the work is done, and at the same time the faster the energy is used up.                                                                      P=W/t or P=E/tWhere P is obviously referred to power, W means work , E means energy, and t is time. The SI unit of power is the watt (W) or joule per second (J/s). definition: Energy is the capacity of a physical system to perform work. Energy exists in several forms such as heat, kinetic or mechanical energy, light, potentia Definition: Potential energy, or stored energy, is the ability of a system to do work due to its position or internal structure. For example, gravitational potential energy is a stored energy determined by an object's position in a gravitational field while elastic potential energy is the energy stored in a spring.

As a form of energy, the SI units for potential energy are the joule (J) or newton-meter (N

l energy, electrical, or other forms. According to the law of conservation of energy, the total energy of a system remains constant, though energy may transform into another form. The SI unit of energy is the joule (J) or newton-meter (N * m).

The kinetic energy of an object is the energy which it possesses due to its motion.[1] It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.pendulum is defined as a mass, or bob, connected to a rod or rope, that experiences simple harmonic motion as it swings back and forth without friction. The equilibrium position of the pendulum is the position when the mass is hanging directly downward.

Definition: Oscillation is a motion that repeats itself in a regular cycle, such as a sine wave or pendulum.Also Known As: periodic motionefinition: Mass is the quantity of inertia possessed by an object or the proportion between force and acceleration referred to in Newton's Second Law of Motion. This is not a very good operational definition of mass, of course. In most common instances, mass is determined by weighing the object and using the force of gravity Answer: A material's density is defined as its mass per unit volume. It is, essentially, a measuremement of how tightly matter is crammed together. The principle of density was discovered by the Greek scientist Archimedes.

To calculate the density (usually represented by the Greek letter "rho") of an object, take the mass (m) and divide by the volume (v): rho = m / vto calculate the value automatically - which is why you can get on a scale and have read your mass. The SI unit of mass is the kilogram (kg). magnetic flux (Physics / General Physics) a measure of the strength of a magnetic field over a given area perpendicular to it, equal to the product of the area and the magnetic flux density through it. Symbol φ

The magnetic field B is defined from the Lorentz Force Law, and specifically from the magnetic force on a

moving charge:

Electric field is defined as the electric force per unit charge. The direction of the field is taken to be the direction of the force it would exert on a positive test charge. The electric field is radially outward from a positive charge and radially in

toward a negative point charge.

Electric current is the rate of charge flow past a given point in an electric circuit, measured in Coulombs/second which is named Amperes.

magnetic lines of force----Curved lines used to represent a magnetic field, drawn such that the number of lines is related to the strength of the magnetic field at a given point and the tangent of any curve at a particular point is along the direction of magnetic force at that point.

A 'unit' is exactly equivalent to one kilowatt hour, and is used in Britain as the unit of measurement for purchasing electrical energy.

The horsepower (hp) is a unit in the foot-pound-second ( fps ) or English system, sometimes used to express the rate at which mechanical energy is expended. It was originally defined as 550 foot-pounds per second (ft-lb/s).

A power level of 1 hp is approximately equivalent to 746 watt s (W) or 0.746 kilowatt s (kW).