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© John Parkinson 1
© John Parkinson 2 Distance travelled - s Time taken - t Velocity - v v= s t v s / t Velocity = Speed in a Specified Direction Constant Velocity
© John Parkinson 3 N 100 m in 4 seconds Distance travelled = ?100 m Displacement = ? 100 m to the East Speed = ?Speed = 100/4 = 25 m s -1 Velocity = ? Velocity = 25 m s -1 to the East
© John Parkinson 4 DISPLACEMENT – TIME GRAPHS Constant velocity Displacement - s Time - t What will the graph look like? GRADIENT = ? Δt Δs VELOCITY
© John Parkinson 5 Displacement - s Time - t What about this graph? A body at rest Displacement - s Time - t And this graph? The gradient is …….? increasing Δs Δt The body must be ……..? accelerating
© John Parkinson 6 1 3 2 AVELOCITY – TIME GRAPHS Velocity - v Time - t Velocity - v Time - t This body has a constant or uniform ………? acceleration Δv Δt The gradient = ? the acceleration 1 = …… ? Uniform acceleration 2 = …… ? Constant velocity 3 = …… ? Uniform retardation [deceleration] Area under the graph = A = …….. ? DISTANCE TRAVELLED
© John Parkinson 7 Velocity – v/ms -1 Time – t/s 30 2050 80 QUESTION The graph represents the motion of a tube train between two stations Find 1.The acceleration 2.The maximum velocity 3.The retardation 4.The distance travelled 1. The acceleration = the initial gradient = 30÷20 = 1.5 m s -2 2. The maximum velocity is read from the graph = 30 m s -1 3. The retardation = the final gradient = -30 ÷ [80-50] = m s -2 4.The distance travelled = the area under the graph =½ x 20 x 30 + x + ½ x x = 1650 m
© John Parkinson 8 What will the distance – time, velocity - time and acceleration time graphs look like for this bouncing ball? s1s1 s2s2 Displacement - s Time - t Velocity - v Time - t s1s1 s2s2
© John Parkinson 9 Acceleration - a Time - t Velocity - v Time - t 9.81ms -2
1 Using Kinematic Equations 1. Write down the symbols, values and units (in SI) of given quantities 2. Write down the symbol of the quantities required.
© John Parkinson 1 © John Parkinson 2 Distance travelled - s Time taken - t Velocity - v v= s t v s / t Velocity = Speed in a Specified Direction Constant.
Kinematics Motion Graphs. 1. Displacement – Time graphs a = uniform positive velocity b = c = d = Displacement Time a b c d a = uniform positive velocity.
SPEED/TIME GRAPHS. Consider the following Speed/Time graphs: v (ms –1 ) 15 6 t (s) This shows:A body moving at 15 ms –1, i.e. zero acceleration, shown.
Properties of a velocity time graph Gradient = Gradient = Acceleration Area under graph = Area = Distance travelled u v ttime velocity.
Velocity - time graph 1. The velocity – time graph shows the motion of a particle for one minute. Calculate each of the following. (a) The acceleration.
Area under a velocity-time graph Car travelling at 70 mph for 2 hours Area = This is the distance travelled, 140 miles 2 70 = 140 v mph t hours
Kinematics Motion in a straight line The diagram below shows a swimming pool of length 50m and the positions of swimmers A and B after 20 seconds. STARTSTART.
Physics Section 2.2 Apply acceleration to motion Acceleration is the rate of change of velocity with respect to time. Average acceleration = change in.
Velocity, speed and acceleration 5m/s velocity 5m/s North East 5m/s speed 5m/s going round Velocity is speed in a given direction An object moving at a.
Straight Line Motion Looking at position, velocity, and acceleration from the integral.
Graphical Analysis of Linear Motion. A car travels along a road at a constant velocity of 10. m/s time (s) position (m)
Motion and Force A. Motion 1. Motion is a change in position 2. Reference points are necessary.
Objectives After completion, you should 1. Know the term displacement, velocity,acceleration and deceleration for motion in a straight line 2. Be familiar.
Acceleration Velocity-time graph Questions. Acceleration.
Speed – Time Graphs. SlopeExampleInterpretation high positive value high acceleration rapid increase in speed low positive value low acceleration slow.
Acceleration. Recall: Acceleration is the rate at which velocity increases or decreases If an object is accelerating is not experiencing uniform motion.
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.
Kinematics. Kinematics is the study of motion. Distance normally refers to the total distance an object moves during a particular journey. Displacement.
Distance & Acceleration. Acceleration: Rate of change of velocity Measures how an objects velocity (or speed) is changing over time a = Change in velocity.
1 Which line shows a speed that gets faster & faster? VELOCITY A B C D E. None of the above.
2.2 Acceleration Physics A. Objectives I can describe motion in terms of changing velocity. I can compare graphical representations of accelerated and.
Kinematics ( Definitions) Aims 1)Be able to recall the definitions of displacement, instantaneous speed, average speed, velocity & acceleration. 2)Be able.
Distance vs. Displacement Speed vs. Velocity.
Motion Type 1: Uniform Motion What is Uniform Motion? Uniform motion describes an object travelling at a constant speed in one direction Uniform motion.
1.2 Speed & Velocity Many people use the terms speed and velocity interchangeably in everyday language. However, they have very different meanings in physics.
Mechanics - 3 Physics12 Motion Graphs 2 Mechanics - 3 Physics12 Motion Graphs 2 Motion Graphs, kinematics - 2.
Motion Vocabulary. The act or process of changing position or place. 1.
Speed vs.Velocity Speed (s) is the distance an object travels per unit of time (rate). Speed (s) is the distance an object travels per unit of time (rate).
Forces N Bronks Distance, Speed and Time Speed = distance (in metres) time (in seconds) D TS 1)Dave walks 200 metres in 40 seconds. What is his speed?
Linear Motion. Displacement The change in position for a given time interval.
All quantities in Physics can be categorized as either a scalar or a vector quantity. A scalar quantity has magnitude (amount) only without direction.
Velocity vs. Time Analysis of a Velocity vs. Time graph.
Chapter 21 Kinematics 21.1 Displacement, Velocity and Acceleration.
Accelerated Motion Velocity, acceleration and gravity.
Forces : Velocity / time graphs and acceleration.
Uniform Motion. 1) Uniform (rectilinear) motion a) Constant Speed b) straight line c) same direction 2) Speed a) Distance covered in a period of time.
Unit 1: Motion and its Applications Kinematics. the language of motion mechanics the study of objects in motion dynamics the study of why things move.
Motion in One Dimension. Displacement x = x f - x i.
Physics Support Materials Higher Mechanics and Properties of Matter b Solutions to Problems - Equations of Motion 27,27, 28, 33, 34, 35,28,33,34,35, Click.
STARTER During a road trip, in 6 hours you travel 300 miles. What is your average velocity? Average Velocity = distance travelled/time taken = 300 miles/6.
1 By E O Jones. Aims Introduce Kinetic parameters and Kinetic principles Objectives Calculate displacement (s), initial velocity (u), final velocity (v),
MOTION GRAPHS. INTERPRET THE GRAPH BELOW: 1.What is the graph showing? Speed, Velocity, Acceleration, Deceleration? 2.How do you know? 3.Explain what.
Projectiles Horizontal Projection Horizontally: Vertically: Vertical acceleration g 9.8 To investigate the motion of a projectile, its horizontal and.
Kinematics AP Physics 1. Defining the important variables Kinematics is a way of describing the motion of objects without describing the causes. You can.
VOCABULARY – Motion - when an object changes it position Relative Motion - an object’s position change is described in terms of a reference point Energy.
Graphing Motion Position vs. Time Position vs. Time Position is same at every time (d = 0) Position is same at every time (d = 0) So speed = 0 So speed.
He Ashely is approaching a stoplight moving with a velocity of 30.0 m/s. The light turns yellow, and Ashley applies the breaks and skids to a stop. If.
Motion Recognizing, Describing, and Measuring Motion.
Linear Motion with Constant Acceleration. Effects of acceleration Object ’ s speed changes every second, therefore the distance covered each second is.
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