Velocity and acceleration, Physics


It is common to find people confusing the terms velocity and speed when describing how fast an object is moving.  The difference is that speed is a scalar quantity, whilst the term velocity refers to both speed and direction of an object.  The full definition of velocity is that it is the rate at which its position changes, over time, and the direction of the change.

The simple diagram below shows how an aircraft, which flies the irregular path from 'A' to 'B' in an hour, (a speed of 350 mph), has an actual velocity of 200 mph in an East-Northeast direction.

1062_velocity and acceration.png


This term describes the rate at which velocity changes.  If an object increases in speed, it has positive acceleration; if it decreases in speed, it has negative acceleration.  A reference to Newton's Second law of Motion will explain the principles of acceleration.  Acceleration can be in a straight line, which is referred to a linear acceleration and it can apply to rotating objects whose speed of rotation is increasing, (or decreasing), when it is called angular acceleration.


Posted Date: 9/11/2012 6:33:39 AM | Location : United States

Related Discussions:- Velocity and acceleration, Assignment Help, Ask Question on Velocity and acceleration, Get Answer, Expert's Help, Velocity and acceleration Discussions

Write discussion on Velocity and acceleration
Your posts are moderated
Related Questions
working principle of a prism

Free-particle A.  Suppose that the wavefunction for a free-particle is given by the wavefunction Find the value of A that normalizes Ψ (x). B.  The Hamiltonian oper

The idea that electrons revolved in orbits around the nucleus of an atom without radiating energy away from the atom was postulated by: a) Thompson b) Bohr c) Ruther

Selection of motors for different Engg. application 1.  For Cement industry: Various types of motors for pumps, fans, conveyors ,crushers, kilns an mills Major mill

The weighted rod floats with 6 cm of its length under water [density 1000 kg/m3]. What length is under the surface when the rod floats in brine [density 1200 kg/m3].

A flat aluminum plate of 0.2 m thickness is initially at 120 Celsius. At time t=0, it is immersed in a liquid at 10 Celsius. Assume a very large heat transfer coefficient on both t


Cooling water flows through a jacketed reactor and is controlled by a valve. The cooling water flow rate through the jacket obeys the following relation: where the pres

can you give me a example of calcuate of laws2

Electric Potential: Electric Potential verifies the flow of charge. Its unit is volt, represented as "v".