MOTIONAn object is said to move in an ever-changing position of a particularreference.
DISTANCE AND DISPLACEMENT DISTANCE DISPLACEMENT Distance is the path Displacement is the length traveled by an change in position from object within a certain the position in terms of time interval. initial and final position. Distance is a scalar Displacement is a quantity. vector quantity. ∆X = X2 – X1
EXERCISEAn object move from A, to B, to C, and come back to B like thepicture below.a. Calculate the distance!b. Calculate the displacement! A 4 B 6 CAnswer:a. Distance b. displacement d = AB + BC + CB x = AB + BC - CB =4+6+6 =4+6-6 = 16 =4
AVERAGE SPEED AND AVERAGE VELOCITY Average speed Average velocity Average speed of (v) is The average velocity the quotient between (v) is the quotient the distance (d) of the between the time interval (Δt). displacement (Δx) and time interval (Δt) Speed is a scalar Velocity is a vector quantity. quantity.
ACCELERATION AND DECELERATION Acceleration or deceleration is defined as the average ratio of change in velocity ∆v = v2-v1 at intervals ∆t = t2-t1
UNIFORMLY STRAIGHT MOTION Uniformly straight motion (GLB) is the motion of an object in a straight line with a fixed pace. Therefore fixed speed, then the average velocity and instantaneous velocity is always the same. so:
UNIFORMLY ACCELERATED MOTION Uniformly accelerated motion (GLBB) is defined as the motion of an object on a straight-line trajectory with constant acceleration. so : The distance traveled by the particle is uniformly accelerated motion is formulated to do: