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Motion in Physics Velocity part2

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Motion in Physics Velocity part2 continues.. When is velocity said to have change Velocity is a vector quantity. So, velocity has a magnitude as well as a direction. The magnitude of velocity is equal to the speed of the body. If either of the two, i.e., either speed or direction changes, velocity is said to have changed. Thus, the velocity of a body change due to a change in its speed, its direction, or both .     Let us consider a car travelling (towards east) at a constant speed of 10 m/s. Then, it has a constant velocity in that direction. When the takes a turn, its velocity changes although its speed remains constant. When the car is at right angles to its original direction, the its velocity (towards east) becomes zero, the speed remaining constant. When the car is travelling in the direction just opposite to the original direction, it has a negative velocity. So, the velocity of a moving object changes due to a change in its direction. What is meant by...
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Velocity in Physics Tutorial Part 1

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                                            To know the position of a moving body at any particular point of time, we should know the following parameters: 1.The distance travelled by the body up to that moment of time 2. the direction in which the body is moving. The distance travelled by a body can be obtained from its speed and the time interval. The speed of the body however does not tell us anything about its direction. The quantity which gives both the distance travelled and the direction of motion is velocity.  How is the term velocity defined Velocity is defined as follows:       The displacement of a body per unit time over a short interval is called velocity. Thus,                             Velocity, v  = Displacement(x)/ Time(t)   ...
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Instantaneous Speed Differ from Average Speed

How does instantaneous speed differ from average speed Although the terms instantaneous speed and average speed have similar definitions, but the two differ in the following respect Differences between instantaneous speed and average speed Instantaneous speed                                                                                          1 Instantaneous speed is the distance travelled by a body per unit time at a particular point of time (or in an infinitestimally small interval of time) 2 Instantaneous speed of a moving objec...
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Speed in Physics

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                                                               SPEED Today We are going to Discuss about Speed . First of all we have a question what is Speed . Speed : - The speed of a moving body tells us how fast the body is moving. Thus, The Speed of a body describes the rapidity of its motion.                                                              Or, Th...
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Uniform motion & Non-Uniform motion

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  Uniform motion & Non-Uniform motion Hi. friends in previous post we discuss about How does the Distance travelled by a body differ from its Displacement and in this post we discuss about Uniform motion & Non-Uniform motion. Uniform motion : An object is said to be moving with uniform velocity if it covers equal displacements in equal intervals of time, however small these intervals may be.                                         Or, Another word we can say that, A body is said to have uniform motion when it travels equal distances in equal intervals of time. Uniform motion of a body is illustrated. Time Example : A body moving with a constant speed is said to be in uniform motion. The st...
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How does the Distance travelled by a body differ from its Displacement

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We have seen that the distance travelled by a body differs from its displacement in certain respects. These differences are given in Table.                                                         Distance 1. The distance travelled by a moving body is the actual length of the path covered by the body, irrespective of the direction. 2. Distance travelled is a scalar quantity. 3. Distance traveled is always positive, negative or zero. 4. Distance travelled is always greater than or equal to the displacement.                    Displacement 1. The displacement of a body is the shortest distance between the initial and the final position of the body. 2. Displacement is a vector quantity. 3. ...
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GRAPHICAL REPRESENTATION OF DISPLACEMENT AND DISTANCE TRAVELLED

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Hi Friends here we come again with the previous point that is related to Motion. In previous Post we have talk about Motion where we have dealt with some points so now lets continue from there...   GRAPHICAL REPRESENTATION OF DISPLACEMENT AND DISTANCE TRAVELLED The difference between the distance travelled by a body and its displacement is shown graphically in given below What is meant by positive, negative or zero displacement The displacement of a body in any direction is given by,       Displacement, d = Final position – Initial position = (x 2 – x 1 )
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