part 2

• Aristotle’s model of the universe is composed of 56 spheres guiding the motion of Sun, Moon and the five known planets.
• Three types of motion in Aristotelian conception: •Natural motion •Violent motion •Projectile motion
• • Natural motionAn object will move eventially return to its natural state depending on the composition that the object is made of – earth, water, air, fire.  
• • Violent motionAn object will move if an external force such as pushing or pulling is applied to it.
• • Projectile motionThe motion of an object is parallel to the ground until it is the objects time to fall back into the ground.
• Impetus-  a force or energy that permits an object to move