Have you ever noticed when you roll a ball down a hill, it just keeps going until someone or something stops it? That is an example of Newton's first law!
The ball is in motion, and it stays in motion until an unbalanced force does something to stop it.
The ball is in motion, and it stays in motion until an unbalanced force does something to stop it.
Like this skater. He is rolling along on his skateboard, but when the wheels hit the rock, his skateboard stops! However, the rock only stopped his skateboard, but not him -- this causes him to keep moving forward, and fall.
An interactive game about Newton's Laws of Motion (you might need headphones) :
http://www.sciencechannel.com/games-and-interactives/newtons-laws-of-motion-interactive.htm
And a quiz to test your understanding!
http://www.proprofs.com/quiz-school/story.php?title=lesson-1-newtons-first-law-motion
http://www.sciencechannel.com/games-and-interactives/newtons-laws-of-motion-interactive.htm
And a quiz to test your understanding!
http://www.proprofs.com/quiz-school/story.php?title=lesson-1-newtons-first-law-motion
Below, the strings do not make music - when at rest they remain at rest. When the force of the bow is applied, the string vibrates creating music.