Archives: Notes

Introduction An object may be made to balance at a particular point.

Introduction Newton’s laws of motion are three physical laws that describe the relationship between a body and the forces acting upon it, and its motion in response to those forces.

Introduction Consider a car that is moving in a straight line.

Introduction Consider a car that is travelling from city A to city B.

Introduction An object is said to be in equilibrium if the resultant force acting on the object is zero or the sum of the moments acting on the object is zero.

Introduction A quantity with magnitude and direction is defined as a vector quantity.

Introduction Wave motion is a means of moving energy from place to place.

Introduction Refraction is the change of direction of wave that occurs when its speed changes.

Introduction If two or more waves collide, they are said to interfere.

Introduction Waves, which move from place to place without the transfer of matter, are called progressive waves.