In the realm of physics, magnitude refers to size or quantity alone. When it comes to movement, magnitude refers to the speed at which an object is traveling or its size.
Know MoreIn physics — the study of motion distance, velocity, speed and mass expressed as quantities — is divided between vectors and scalars. A one-dimensional scalar is described by its magnitude alone, while a two-dimensional vector is fully described by its magnitude and direction.
Speed is the magnitude of the movement. To describe velocity, both magnitude and direction are required. In depicting a vector in a vector diagram, or free-body diagram, the magnitude is represented by the length of the arrow.
Order of magnitude calculations are essentially an estimate. They are used in physics to approximate calculations and determine the appropriateness of values without the use of complex calculations or when precise values are unavailable. They can also be used to check the reasonableness of more precise calculations. Order of magnitude calculations are useful when comparing items that are 100 times each other or more. The amount in question is estimated to the power of ten; for example, the population of a municipality may be estimated in the tens of thousands, hundreds of thousands or millions.
Learn more about Motion & MechanicsAcceleration shows the changes in the magnitude and direction of velocity. It is a vector with a standard unit of meters per second squared.
Full Answer >The difference between scalar and vector quantities is that the former only provides numerical data or magnitude, while the latter also provides direction in addition to magnitude. Examples of scalar quantity include mass and speed (e.g., 12 kg, 5 m/s), while velocity (e.g., 6 m/s, north) and acceleration (e.g., 2 m/s^2, east) are examples of vector quantities.
Full Answer >The general formula for finding speed is x = d / t, where "x" denotes the speed, "d" indicates the distance traveled and "t" represents the time it takes to cover "d." Speed is a scalar quantity that is entirely defined by its magnitude without referencing its direction.
Full Answer >The secret behind the curveball is the grip the pitcher uses when he releases the ball. A proper curveball grip is between the pitcher's thumb and his index and middle fingers. The middle finger must rest on the seam of the ball. To effectively produce the spin of the curveball, snap your wrist when releasing the ball. The spin causes air to flow differently over the ball than underneath.
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