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# Newton 3/Momentum

TermDefinition
2 factors that affect gravity mass and distance
2 factors that affect momentum mass and velocity
acceleration due to gravity acceleration of a falling object in freefall is about 9.8m/s^2
centripetal acceleration acceleration towards the center of a curved or circular path
centripetal force net force exerted toward the center of a curved path
formula for momentum mass x velocity; p = mv
freefall when all forces except gravity acting on a falling object can be ignored
gravity attractive force between any two objects; depends on the masses of the objects and the distance between them
horizontal motion <---->
How Seatbelts work All three of Newton's Laws explain how seatbelts work; 1st: Your body will stay in motion during a crash unless the seatbelt stops you
Law of Conservation of Momentum momentum can be transferred from one object to another when they collide but it cannot be created or destroyed
Law of Universal Gravitation the gravitational force between two masses decreases rapidly as the distance between the masses increases
momentum how much force is needed to change an object's motion; the product of an object's mass and velocity
momentum of an object at rest zero
Newton's Third Law of Motion action/reaction; when one object exerts a force on a second object, the second one exerts a force on the first that is equal in strength and opposite in direction
projectile motion projectiles follow a curved path due to gravity
units for momentum kg x m/s
vertical motion |
weight vs. mass weight increases as mass increases
Work using a force to move an object a distance (when both the force and the motion of the object are in the same direction.)
friction the force that opposes the sliding motion of two surfaces that are touching each other
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