Scalar and Vector quantities.
Scalar quantites have a size only, e.g:
Vector quantites have size and direction e.g.:
Speed is how fast an object is moving at a particular time. Direction isn't important when measuring speed. Speed is a scalar quantity.
The speed of a object can change during the course of its journey. To calculate the average speed for a journey, you can use the following equation:
If two objects are moving near to eachother, their motion is described in terms of their relative speed.
Direction is important when considering motion. Two crs travelling on a straight road…