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Gravity

Gravity. Law of Gravitation- any two masses exert an attractive force on each otherGravity is one of the 4 basic forces : electromagnetic force, the strong nuclear force, and the weak nuclear force.Gravity is a long range forceDue to gravity all objects fall with the same acceleration regardless

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Gravity

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    1. Gravity Section 3.2

    2. Gravity Law of Gravitation- any two masses exert an attractive force on each other Gravity is one of the 4 basic forces : electromagnetic force, the strong nuclear force, and the weak nuclear force. Gravity is a long range force Due to gravity all objects fall with the same acceleration regardless of mass

    3. All things fall at the same rate??? Things fall at the same rate because a = F/m Force is greater with greater mass, so acceleration remains constant http://www.glenbrook.k12.il.us/GBSSCI/PHYS/mmedia/newtlaws/efff.html Without air resistance http://www.glenbrook.k12.il.us/GBSSCI/PHYS/mmedia/newtlaws/efar.html With air resistance

    4. All things fall at the same rate?? http://www.teachersdomain.org/resources/phy03/sci/phys/mfw/galmoon/index.html http://www.teachersdomain.org/resources/phy03/sci/phys/mfw/zweightlessness/index.html

    5. Weight Weight- gravitational force exerted on an object Weight decreases as an object moves away from Earth because gravity decreases Weight results from a force; mass is how much matter an object contains Objects in the space shuttle are in free fall because they have no force supporting them http://www.physicsclassroom.com/Class/circles/U6L4d.html

    6. Weight Projectiles � have horizontal and vertical velocities due to gravity and follow a curved path http://www.glenbrook.k12.il.us/gbssci/phys/Class/vectors/u3l2a.html Acceleration toward the center of a curved path is called centripetal acceleration- caused by centripetal force �unbalanced F

    7. Why can�t we feel the motion of the earth? http://www.teachersdomain.org/resources/phy03/sci/phys/mfw/galthought/index.html How does low gravity impact climate? http://www.teachersdomain.org/resources/ess05/sci/ess/eiu/extemp/index.html

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