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Forces + Motion laws

Review of forces and laws of motion

QuestionAnswer
anything that can cause an object to accelerate force
the sum of all the forces acting on an object net force
the amount of matter an object has mass
the amount of space an object takes up volume
measure of gravity's pull on object's mass weight
SI unit for force and weight Newtons ( N )
SI unit for momentum kg * m/s
SI unit for acceleration m/s^2 ( m/s/s )
Law of motion: Fnet = ma 2nd
Law of motion: for every action force there is an equal and opposite reaction force 3rd
Law of motion: object in motion tends to stay in motion until acted on by a net force 1st
force that always acts in the opposite direction as motion friction
anything that has been thrown, launched, shot , etc... projectile
path of motion of projectiles (ignoring air resistance) parabolic (curved)
friction that acts on objects that are NOT moving static friction
friction that acts on moving objects kinetic friction
SI unit for mass kilograms (kg)
illustration of ALL the forces acting on an object Free Body Diagram
pair of forces that do NOT affect an object's motion balanced force pairs
pair of forces that DO AFFECT an object's motion (causes acceleration) unbalanced force pairs
mass x velocity momentum
states that the total momentum is the same before and after a collision in a closed system law of conservation of momentum
collision where the 2 objects bounce off each other elastic collision
collision where the 2 objects hit and stick to each other inelastic collision
car safety feature that increases time and area of impact to lower the force air bags
car safety feature that makes person(s) & car have the same momentum at impact seat belts
objects at rest have this momentum zero
Created by: cadetjt
Popular Physics sets

 

 



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