Physics Course/Motion/Linear Motion

Linear MotionEdit

Linear Motion refers to any motion moving in a straight line without changing it's direction

Linear Motion with constant speed over timeEdit

Any Linear Motion that has constant speed at all time can be expressed as

v(t) = V

For any motion travels a Distance in Time caused by a Force has the following characters

Characteristics Symbol Mathematic Formula Unit
Speed v \frac{s}{t} = a t \frac{m}{s}
Accelleration a \frac{v}{t} = \frac{s}{t^2} \frac{m}{s^2}
Distance s v t = a t2 m
Force F m a kg \frac{m}{s}
Work W F s kg \frac{m^2}{s}
Pressure P \frac{F}{A} kg \frac{m}{s^3}
Impulse Fm F t kg \frac{m}{s}
Momentum mv m v kg \frac{m}{s}
Energy E \frac{W}{t} = F \frac{s}{t} = F v kg \frac{m^2}{s}

Linear Motion with changing speed over timeEdit

Any Linear Motion travels with different speed at different time v1 at t1 and v at t

The Change in Speed

\Delta v =  v - v_o

The Change in Time

\Delta t = t - t_o

The ratio of Change in Speed over Change in Time gives the Accelerarion of the motion

 a = \frac{\Delta v}{\Delta t} = \frac{v - v_o}{t - t_o}
\Delta v = a \Delta t
 v =  v_o + a (t - t_1)
Last modified on 28 March 2013, at 15:35