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U.8 MOTION, fisica 1, fisica 2, fisica 3, fisica 4, fisica 5, fisica 7,…
U.8 MOTION
MOTION
TYPES OF MOTION:
-Rectlinear motion
-Circular motion
-Parabolic motion
DESCRIBING MOTION:
-Position (x)
-Trajectory
-Distance moved (d)
-Displacement (D)
TIME:
-Instantant of time (t)
-Time interval (t2 - t1)
SI unit f time is second
Uniform rectilinear motion
(URM)
-Calculate distance: d= v·t
-Calculate the distance and time: x= x0+v·t
Uniform rectlinear motion graphs:
-Position-time (x-t) graphs
-Speed- time (v-t) graphs
UARM
Acceleration is the variation in speed by unit of time
SI: m/s²
UARM:
-Average aceleration: a = v-v0/t
-Speed and distance: v= v0+a·t
-Motion: x=x0+v0·t+1/2·a·t²
VELOCITY
Speed is the distance an object moves per unit of time
Conversions factors converts a unit in other
Average speed and instantaneous speed
-Instantaneous speed:n (v)
-Average speed: va= d/t
