physics exam 1
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17 Terms
Interaction
causes a change in speed or direction
distance
a measure between two locations
displacement
Measurement from the starting location to the ending location
velocity
speed with direction
acceleration
rate at which velocity changes
Momentum principle
Fnet = Δp/Δt
Newton’s First Law
everything persists in a state of rest or moving in a straight line at constant speed, except to the extent that it is compelled to change state (when a = 0 so Fnet = 0)
Newton’s Second Law
defines a net force, Fnet = Δp/Δt, Fnet = ma
Finding magnitude
squaring each part of a vector and putting it under a square root
unit vector
vector/magnitude
Average velocity equals what?
Δr/Δt
Impulse
the change in momentum (kgm/s)
Kinetic friction
sliding
Static friction
not sliding
Ff = ?
u*Fn
Fnet =
ma
Fg =
mass * gravity (9.8 on Earth)
Note 
Flashcards (85)