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Kinematics JUNIOR EAMCET
Distance and Displacement O A B 4m 3m 5m O to B: distance is 7m and displacement is 5m
Distance and Displacement O A B C 4m 3m 5m O to C along OABC: distance is 11m and displacement is 3m
Distance and Displacement O A B C 4m 3m 5m O to O along OABCO: distance is 14m and displacement is zero
Arc of a Circle RR A B Arc length AB is R AB jaw length is
Average Speed and Average Velocity u v tt v s u s Both averge speed and average velocity
Average Speed and Average Velocity v s u s Both averge speed Both averge velocity
Train Crossing a Bridge Post Train BridgeTrain u s Time of crossing the post is Time of crossing the bridge is u s L
Average Speed and Averge Velocity AB R Average speed = Average velocity = Average acceleration = u u
Direction of Acceleration uv uv a a Direction of acceleration is v – u Acceleration is positive if v > u Acceleration is negative if v < u
Sign Application + g Downward direction is positive Freely falling body S, u, v, g, h are all positive Body projecte up Upward direction is positive a = – g u, v, h are all positive
Body Projected From the Top of a Tower u Upward direction is positive a = – g s = – h u is positive s, g are negative
Tossing in a Train If V t = V b : a = 0; the ball falls in the hand If V t > V b : a > 0 the ball falls bedhind If V t < V b : a < 0; the ball falls in front
V n – V n-1 = a V n = u + an V n-1 = u + a(n – 1) S n – S n-1 = a
u v s t Displacement = average velocity × time If u = 0
A B a u A B a u A B a u A travels with acceleration a, B with uniform velocity u If they start simultaneously Time of meet is If A is ahead of B d d If B is ahead of A
One Body Projected and the Other Falling Freely u = 0 u = u Time of meet is h Height of meet is h = h 1 + h 2
u u h Time taken to reach the ground is t 1 when throuwn up Time taken to reach the ground is t 2 when thrown down t1t1 t2t2 Time of free fall is Initial velocity u = Height h =
Water Drops from the Tap h (n – 1)t = t is time interval with which the drops are released Ratio of displacements of 4 th, 3 rd, 2 nd and 1 st drops is 1 : 3 : 5 : 7
h height of the window u velocity at the top of the window t time of crossing the window
If the velocity is reduced by after travelling a distnce x, then the total distance it can travel is
If th front and back of the train cross a post with velocities u and v, the center will cross the same post with velocity ---- u v x
Graphical Representation v t Uniform velocity a a O -a 10m/s 35 7 9 -5
Graphical Representation v t Uniform velocity 10/3 a O -5 10m/s 35 7 9 -5 15 20 10 -5
Graphical Representation v tO v max
v t O P V – t Graph The slope gives acceleration Acceleration is positive if < 90 Acceleration is negative if > 90 Area represents displacement Displacement is positive if area is above x - axis
Graphical Representation v t u constant a u = 0 a u -a O
AB s u v Distance is 2s Displacement is zero Time for forward journey is Time for return journey is Average speed is
u a t u a t d
Equations of Motion X = a + bt + ct 2
Problem Find the acceleration
Motion in One Dimension
Freefall Motion Notes Any object near the surface of the Earth experiences the pull of gravity. If released from rest, the object will fall freely toward.
The four kinematic equations which describe an object's motion are:
Kinematic Equations Practice Problems.
(i) its uniform retardation, (ii) time taken to come to rest,
Physics 12 - Kinematics.
-Thrown Down -Going Up and Coming Down Physics Mrs. Coyle.
Graphical Analysis of Motion
ENGINEERING MECHANICS CHAPTER 7
Q2.1 This is the x–t graph of the motion of a particle. Of the four points P, Q, R, and S, 1. the velocity vx is greatest (most positive) at point P 2.
Kinematics Notes Motion in 1 Dimension Physics C 1-D Motion
POSITION AND DISPLACEMENT A particle travels along a straight-line path defined by the coordinate axis s. The position of the particle at any instant,
1 UCT PHY1025F: Mechanics Physics 1025F Mechanics Dr. Steve Peterson KINEMATICS.
Chapter 2 Motion in One Dimension 1. Speed 2. Displacement 3. Average and Instantaneous velocity 4. Acceleration 5. Motion Diagrams 6. 1D motion with constant.
Ball thrown upwards and caught at same height on way down 0 A B C D Displacement Time 0 A B C D Velocity Time Upwards is positive, Initial displacement.
One-Dimensional Motion in the Vertical Direction (y – axis) or Freely Falling Bodies Montwood High School Physics R. Casao.
MOTION An object is in motion if its position changes. The mathematical description of motion is called kinematics. The simplest kind of motion an object.
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