hee today rot at home nothing to do so decided to mug a bit on physics while waiting for the afternoon when ii can go out and pak tor with my pioneering group...below are some here and there ii decided to type out...it will be helpful to you too if you are taking your o'levels science physics next year =D can tell you tat ii suck at physics...
Kinematics
Constant speed- The object will cover the same distance every regular interval of time.
Acceleration- It is a vector quantity.Defined as the rate at which an object changes its velocity.
- An object is accelerating if it is changing its velocity
- If it is not changing its velocity then its not accelerating
Acceleration=vf-vi/total time
Acceleration (for graphs)=y2-y1/x2-x1
Constant acceleration- An accelerating object changing its velocity by the same amount each second.
Speed- A scaler quantity. Does not keep track of direction.
Average speed=Total Distance travelled/Total time taken
Velocity- A vector quantity.Speed with a direction.Defined as the rate at which an object changes its position
- An object at CONSTANT velocity has ZERO acceleration
Average velocity=displacement/time
This is Chi-mer-logy!!