# Tested Physics Links to Learn the Laws of Motion online

Newton’s Laws of motion First Law: Every body continues to be in its state of rest or state of uniform motion in a straight line unless an external force complels it to do so. Second Law: The rate of change of momentum of a body is directly proportional to the net external force acting on [...]

# How to describe momentum physically ?

Kiran asks: “How do you describe momentum physically by not in definitions like product of mass and velocity?” Answer: Momentum is defined as “Mass in Motion” or “The quantity of motion“. Momentum is a measure of the “effect” a moving body can produce. It is a measure of the “effort” required to bring a body to [...]

# Verified Links for Studying Waves online

http://www.bbc.co.uk/schools/gcsebitesize/science/edexcel/waves/ http://revise-physics.net/IGCSE/pdf/P9Waves.pdf http://www.gcse.com/waves.htm http://www.physicsclassroom.com/Class/waves/ http://library.thinkquest.org/10796/ Copy - paste the above links on address bar to study waves in detail