Force Work Power and Energy – Notes
Motion- Graphical Representative of Motion
Motion can be represented using a line graph comparing dependent quantities and a common independent quantity.
Time is always taken as the independent variable in graphical representation if motion.
A distance – time graph represents the change in the position of an object with the time.
A velocity – time graph represents the change in the velocity of an object with the time.
The area under a velocity- time graph is equal to the magnitude of displacement of the body in a given time.
The equations that define the relationship between velocity and acceleration of a body moving in a straight line are known as equations of motion.
Velocity- time relation: v = u + at
Position – time relation: s = ut + at2
Position – time relation: 2as = v2 – u2