\u2192 Motion – Motion is the change in position with respect to a set of stationary landmarks.<\/p>\n
\u2192 Types of motion are translatory, rotatory and oscillatory.<\/p>\n
\u2192 A body is said to move in a translatory motion if the whole body moves through the same distance in the same interval of time.<\/p>\n
\u2192 A body is said to be in rotatory motion if it moves about a fixed point without changing the radius of its motion.<\/p>\n
\u2192 A body is said to be in oscillatory motion if it moves to and fro about its mean position.<\/p>\n
\u2192 A body is said to be in vibratory motion if the body moves to and fro in a particular style.<\/p>\n
\u2192 Oscillation of pendulum is one complete to and fro motion.<\/p>\n
\u2192 The maximum displacement on either side of a mean position is called amplitude.<\/p>\n
\u2192 A motion which repeats itself at regular intervals of time is called periodic motion.<\/p>\n
\u2192 A physical quantity which has only magnitude and no direction is called a scalar quantity.<\/p>\n
\u2192 A physical quantity which has magnitude as well as direction is called a vector quantity.<\/p>\n
\u2192 Speed is the distance travelled per unit time. It is a scalar quantity.<\/p>\n
\u2192 The displacement per unit time is known as the velocity of the body. It is a vector quantity.<\/p>\n
\u2192 The rate of change of velocity is called acceleration. It is a vector quantity.<\/p>\n
\u2192 Frequency is the number of complete oscillations in one second.<\/p>\n
\u2192 Unit of frequency is Hertz.<\/p>\n
\u2192 Motion is of two types –
\n(a) uniform
\n(b) non-uniform motion.<\/p>\n