Motion
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The document discusses different types of motion in the human body including uniform motion like breathing and the heart, and non-uniform motion like the hands, muscles, tongue, and teeth. It also defines key concepts in motion including distance as the total length covered independent of direction, displacement as distance in a specified direction, speed as the rate of change of distance over time, velocity as speed in a specified direction describing both magnitude and direction of motion, and acceleration as the rate of change of velocity with time such as when an object speeds up, slows down, or changes direction.
Motion
- 1. motion By Brendan D’souza Grade and division:- 9B Roll no :- 11
- 2. Types of motion in a human body • Hand - uniform motion • Muscles - non uniform motion • gland - uniform motion • Tongue and Teeth – non uniform motion • Breathing – uniform motion • Heart – uniform motion
- 3. Distance •Distance is the total length covered by a moving object independent of the direction of motion . •Distance is a scalar quantity .
- 4. Displacement •Displacement is the distance measured in a straight line and in a specified direction . •Displacement is a vector quantity .
- 5. Speed • Speed is defined as rate of change of distance. • In other words , speed is the distance moved per unit time . It tells you how fast or slow the object is moving
- 6. Velocity • Velocity is the rate of change of displacement . • It is a speed in a specified direction . • It tells us the magnitude and direction that the object is moving
- 7. Acceleration • Acceleration describes of the rate of change of velocity with time . • Acceleration is when an object > Speed up > Slow down >changes direction • Like velocity , acceleration is a vector quantity.