Science Concepts
Speeding into Science
Momentum & Acceleration
Momentum is mass and speed, it is not the same as acceleration. Acceleration is the rate that velocity changes over a period of time.
Newton's Laws of Motion
Newton's First Law of Motion
States that an object at rest tends to stay at rest and an object in motion tends to stay in motion unless an unbalanced net force acts on it.
Newton's Second Law of Motion
States that acceleration depends on mass and the amount of force applied to it. Newton's Second Law of Motion has an equation a=F/m.
Newton's Third Law of Motion
States that for every action force there is an equal and oppisite reaction force.
Weightlessness
Weightlessness is being at the state that you feel like you have no weight. A person that feels weightlessness might be an astronaut. If you have gone on a roller coaster with a hill then a large drop you felt weightlessness.
Gravity
Gravity is the Earths pull on us and the objects around us. On the Moon our weight would be one sixth of what we do now.