2. An object is in motion if its place changes
with respect to a fixed point which we call the
reference point.
3. The distance of an object to a reference point
in a stated direction gives the position of the
object. Position is a vector quantity which has
both direction and magnitude.
4. The change in position of an object is called
displacement.
5. Distance traveled in unit time is called speed.
6. Average speed is calculated by dividing the
total distance traveled by the total time taken.
7. When we talk about speed and direction, we
use the term velocity.
8. If an object moves with constant speed its
motion is called uniform motion.
9. Speeding Up:
If an object covers more distance than
pervious second its motion is called speeding
up.
Slowing Down:
If an object covers less distance than pervious
second its motion is called slowing down.
