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Physics Midterm

QuestionAnswer
set of conditions used to specify an object’s position in space & time frame of reference
shortest path of motion displacement
total path of motion distance
distance/ time speed
displacement/ time velocity
(change in velocity)/ time acceleration
quantity with magnitude only scalar quantity
quantity with magnitude & direction vector quantity
speed up , slow down, change direction 3 ways to accelerate
speed up in + direction OR slow down in - direction positive acceleration (2 ways)
speed up in - direction OR slow down in + direction negative acceleration (2 ways)
motion that forms a right triangle 90 degree motion
motion that forms a straight line linear
study of the nature & properties of matter & energy physics
change in position motion
"an object in motion tends to stay in motion until acted on by a net force" 1st law of motion
resistance to change in motion (summarizes 1st law) inertia
F = m*a 2nd law of motion
"for every action force there is an equal and opposite reaction force" 3rd law of motion
anything that can cause object to accelerate force
force that must touch the object it acts on contact force
force that does NOT touch the object it acts on field force
anything that has been thrown or shot projectile
motion that all projectiles have parabolic
contact force that acts in the opposite direction of motion friction
friction that acts on stationary objects static friction
friction that acts on moving objects kinetic friction
sum of all the forces acting on object net force
illustration of all the forces acting on object Free Body Diagram
force x distance work
SI unit for Work and Energy Joules
SI unit for Power Watts
energy based on position (height) [ m*g*h ] Potential Energy (PE)
energy based on motion [ 0.5m*v^2 ] Kinetic Energy (KE)
sum of PE and KE Mechanical Energy (ME)
is needed to do work energy
mass x velocity momentum
states that total momentum is conserved in all collisions in a closed system law of conservation of momentum
objects collide & separate elastic collision
objects collide & stick together inelastic collision
wave where particles move perpendicular to wave direction transverse wave
wave where particles longitudinal wave
surface wave
Created by: cadetjt
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