Differences between velocity and speed. No. Velocity Speed 1 Rate of change of position of an object in a definite direction is called velocity. Rate of change of position of an object in any direction is called speed. 2 Velocity is a vector quantity. Speed is a scalar quantity. Also read
From a moving bus, trees seem moving because of relative velocity. Every observer sees his own structure as non-moving. Passengers of a moving bus will see the bus as a non-moving object but he will think that the trees outside are moving. Also read
If an object in periodic motion moves in such a way that in half of its time period its motion is in a definite direction and in another half of the time period its direction of motion is opposite but the path is the same then its motion is called oscillatory. A simple pendulum moves … Read more
If the rate of increase of velocity of a moving body in a particular direction is maintained constant all the time, then the acceleration is said to be uniform. An example of uniform acceleration is the gravitational acceleration. Due to gravity, the acceleration of a freely falling body is 9.8 m/s2, that is, its velocity … Read more
The error for which an irrelevant measurement occurs in a measured result due to the precision limitations of the measuring device is known as a random error. In order to minimize the random error, the average value of frequent measurements has to be taken. Also read
Big bang is the phenomena where the galaxies goes further from one another. In 1924, scientist Hubble Showed that the universe is gradually expanding. Meaning, once in the past the whole universe was in one single point. After the massive explosion, that is big bang, the whole universe began expanding. This expansion will never stop … Read more
For hundreds of years, scientists have researched and gathered knowledge from their surroundings. Technology is the outcome of this knowledge. This technology can be both advantageous and harmful depending on its use. Any knowledge can be utilized in both ways. It depends on the invented technology from the knowledge. Example: Radioactive objects can be used … Read more
Mass is unique property of an object. Mass is measure of how much matter an object has. It is independent of place, time and person. Weight as the force exerted on a body by gravity. It is a measure of how strongly gravity pulls on that matter. If mass on of a body is m … Read more