kinematics Flashcards
what is the SI unit for weight in physics
kg
one pico meter (pm) is ___ m
10^-12
one nanometer (nm) is ___ m
10^-9
one gigameter (Gm) is ___ m
10^9
one millimeter (mm) is ___ m
10^-3
what is the difference between displacement and total distance travelled
d= net distance traveled (xf-xi)
displacement equation
d=xf-xi
average velocity is
d/t
(displacement divided by time)
diff b/w speed and velocity
velocity= how fast an objects position changes with direction
speed= scalar, magnitude (+) of v
average acceleration
(change in v)/t
the “big 5” for displacement (missing a)
d=1/2(v0+v)t
the “big 5” for displacement (missing v)
d= v0t+1/2at^2
the “big 5” for displacement (missing v0)
d=vt- 1/2at^2
the “big 5” for velocity(missing d)
v=v0+at
the “big 5” for velocity(missing t)
v^2=v0^2 + 2ad
acceleration due to gravity
10m/s^2
the slope of _____________ gives velocity
position vs t
the slope of _____________ gives acceleration
velocity vs t
the area under a velocity vs time graph gives _______
displacement
acceleration in the same direction as velocity means the objects speed is
increasing
acceleration in the opposite direction as velocity means the objects speed is
decreasing
when an object is in free fall, what do we assume
acceleration=10m/s^2
in projectile motion, what would the approach be
separate into x and y variables (x is horizontal), and use
ex: acceleration has 2 parts, ax and ay
