FORM 2-PHYSICS-TOPIC 5-MOTION IN STRAIGHT LINE

MOTION IN STRAIGHT LINE

Motion is the change of position of an object from one place to another. There are two types of motions; i.Circular motion-Is the motion of an object in a circle. Examples; a/. motion of the electron around the nucleus of an atom b/.revolutionary movement of the earth around the sun. ii.Linear motion-Is the motion of an object in a straight line.

Distance and Displacement

Difference between Distance and Displacement

Distinguish between Distance and Displacement

Distance Is the length between two points or two objects.It is a scalar quantity i.e. it has a magnitude only but no direction. Its symbol is X or S and the SI unit is meter (m). Other units used are Kilometer (km) and Centimeter (cm)

Displacement Is the distance in a specific direction. It is a vector quantity i.e. it has both magnitude and direction.

Differences between distance and displacement

Distance	Displacement
Is the length moved by an object between two points	Is the distance in a specific direction
It is a scalar quantity	It is a vector quantity

The SI Units of Distance and Displacement

State the SI units of Distance and Displacement

The symbol for distance is X or S and the SI unit is meter (m). Other units used are Kilometer (km) and Centimeter (cm)

The standard unit of displacement in the International System of Units ( SI ) is the meter (m).