Speed, distance and time are very essential concepts when one starts to learn about physics. Talking about one of them naturally brings up the other two as well, since they are linked with each other. Let's find out how, and learn about them! SPEED Speed is a measure of how fast something is moving. It is how quickly an object is changing it's position, and so, it is a scalar quantity . • The speed of an object is said to be more when it is travelling faster and covers more distance in a certain time. • The speed of the object is said to be less when it is travelling slower and covers lesser distance in the same time. SI unit of speed : • m/s (metres per second) • Commonly used : Km/h (Kilometres per hour) • m/h (miles per hour) How to calculate speed : speed = distance/ time DISTANCE The distance between two objects is a measure how far away the objects are from each other. It is the physical length between two objects. • The distance between two objects is...
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