DOWNLOAD PDF KINEMATICS NOTES PHYSICS 11

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1 Chapter 1 : Kinematics Grade 11 Physics Notes Khullakitab Physics 11 à Kinematics 1 Physics 11 à Kinematics à Graphing Motion Kinematics is the study of motion without reference to forces and masses. Note that the second equation is the derivative of the third with respect to t, assuming all other values are constant. Because of this, it is possible for a calculus student to memorize only four of the Big 5, and derive the second from the third when necessary. Go to calculus notes Objects in Free Fall If an object is in free fall, this means that the object is being influenced only by gravity. Realistically, this is not possible because of air resistance, but for AP and AICE physics, we assume that air resistance is negligible, making free fall possible. The effects of gravity cause an object in free fall to experience a constant acceleration, called gravitational acceleration, which is represented by the letter g. On Earth, the value of g is known to be 9. With air resistance, this would not be entirely true because of differences in surface area, but this can be ignored on the AP and AICE exams. Two-Dimensional Motion Projectile Motion In physics, a projectile is defined as any object that moves through the air in a parabolic arc under only gravitational acceleration. An example of a projectile, assuming negligible air resistance, would be any object thrown through the air, such as a basketball. Projectiles move in two directions, vertical and horizontal. These two directions of motion can be treated seperately for calculations. Vertical Motion The vertical motion of a projectile is mathematically the same as the motion of an object in free fall, so the Big 5 can be applied in the same manner. Note that in calculating projectile problems, vertical acceleration must be negative. Also, if a projectile is initially moving upward, vi must be positive. If the projectile is initially moving downward, vi must be negative. If the projectile is initially at rest not moving, then vi must be 0. When a projectile is initially moving upward, such as a ball tossed underhanded into the air, the downward acceleration of gravity causes the velocity to reduce at a constant rate. Instead, it must be broken into its horizontal and vertical, or x and y components. Components are vectors that point only along the axes of the coordinate system, but together give the same result as the original vector. See the sample problems for more details on this. Once vx,i and vy,i are known, we use these values in place of vi in their respective equations and solve as usual. Page 1

2 Chapter 2 : Class 11 Physics Notes Chapter 2 Kinematics - Ncert Solutions Pdf Speed and velocity: Velocity: The time rate of change of displacement is known as velocity. It is a vector quantity and the magnitude of velocity is equal to that of displacement. Which of the following statements about velocity-time graphs are TRUE? List all that apply. The slope on a velocity-time graph is representative of the acceleration of the object. The area on a velocity -time graph is representative of the change in position of the object. Objects with positive acceleration will be represented by upwardly-curved lines on a velocity-time graph. If an object is at rest, then the velocity-time graph will be a line with zero slope. A line with zero slope on a velocity-time graph will be representative of an object which is at rest. A line with a negative slope on a velocity-time graph is representative of an object with negative velocity. If an object changes its direction, then the line on the velocity-time graph will have a changing slope. An object which is slowing down is represented by a line on a velocity-time graph which is moving in the downward direction. Useful Web Link 7. Which of the following statements about free fall and the acceleration of gravity are TRUE? An object that is free-falling is acted upon by the force of gravity alone. A falling skydiver which has reached terminal velocity is considered to be in a state of free fall. A ball is thrown upwards and is rising towards its peak. As it rises upwards, it is NOT considered to be in a state of free fall. An object in free fall experiences an acceleration which is independent of the mass of the object. A ball is thrown upwards, rises to its peak and eventually falls back to the original height. As the ball rises, its acceleration is upwards; as it falls, its acceleration is downwards. The speed at which it is launched equals the speed at which it lands. Assume negligible air resistance. A very massive object will free fall at the same rate of acceleration as a less massive object. The value of g on Earth is approximately 9. The symbol g stands for the force of gravity. Useful Web Link Part B: Page 2

3 Chapter 3 : 1D Kinematics Review Kinematics. 1. REST AND MOTION * An object is said to be in motion wrt a frame of reference S 1, when its location is changing with time in same frame of reference S 1. * Rest and motion are relative terms. Differentiate between Kinematics and Dynamics 4: How you will define the motion? How we can say that rest and motion are relative states? Define Rotatory motion 8: Differentiate between Circular motion and rotatory motion 9: What do you know about scalar and vector quantities How are vector quantities important in our daily life? What do you know about Vector Representation? What is meant by distance? What do you know about speed? How you will define the uniform speed? A body is moving with uniform speed. Will its velocity be uniform? What do you know about velocity? Differentiate between uniform and variable velocity. Does speedometer of a car measure its velocity? Why a body moving along a circle with uniform speed has variable velocity? What is meant by the acceleration? What is meant by positive acceleration and negative acceleration? A body moving with uniform velocity. What will be its acceleration? Can a body mov. If yes then what information we get from it? How can we use equations of motion for bodies, which are falling freely under the What are the points kept in mind when bodies are moving freely under gravity? When a body is thrown vertically upward, its velocity at the highest point is zero. Define Translatory motion and its types. Derive the equations of motion for uniformly accelerated rectilinear motion. A body has translatory motion if it moves along a: Which of the following is a vector quantity? If an object is moving with constant speed then its distance-time graph will be a straight line. The speed-time graph of a car is shown io the figure, which of the following statement is true? By dividing displacement of a moving body with time, we obtain: A ball is thrown vertically upward. Its velocity at the highest point is: A change in position is called: A train is moving at a speed of 36 kmh Its speed expressed in ms1 is: A car starts from rest. The distance moved by car: Explain trajectory motion and give examples of various types of translatory motion: Define the terms speed, "velocity, and acceleration. How do riders in a Ferris wheel possess translatory motion but not circular motion? Sketch a distance-time graph for a body starting from rest. How will you determine the speed of a body from this graph? Which of the following can be obtained from the speed-time graph of a body? How can vector quantities be represented graphically? Why vector quantities cannot be added and subtracted like scalar quantities? How are vector quantities important to us in our daily life? Derive equations of motion for uniformly accelerated rectilinear motion. Sketch a velocity-time graph for the motion of the body. From the graph explaining each step, calculate total distance covered by the body. A train moves with a uniform velocity of 36 kmh. Find the distance traveled by it 2. A train starts from rest. What will be its speed at the end of s. A car has a velocity of 10 ms. It accelerates at 0. Find the distance traveled during this and the find velocity of the car. It takes 3 s to reach the highest point. Calculate the maximum height reached by the ball. A train from rest with an acceleration of 0. A train starting from re. It travels at speed for 5 minutes. Finally, it moves with uniform retardation and is stopped after 3 minutes. Find the total distance traveled by train 2. A cricket ball is hit vertically upwards and returns to ground 6 s later. Calculate i Maximum height, reached by the ball. How much further will the train move before coming to rest? In the above problem. The material presented here is to help students and for only the educational purpose. Page 3

4 Chapter 4 : Kinematics Practice Quiz 1 - ProProfs Quiz Revision Notes on Kinematics Inertial frame of reference: Reference frame in which Newtonian mechanics holds are called inertial reference frames or inertial frames. Reference frame in which Newtonian mechanics does not hold are called non-inertial reference frames or non-inertial frames. Error I hate to break it to you, but no body is perfect. We are all going to make mistakes and our experiments are all going to have mistakes. It is one of the inevitable certainties of life. There are two major types of error associated with all experiments. The precision of the measuring instrument determines the size of the random error. This is the worst type of error because it means that something is constantly going wrong. We do this by using an equation for percentage difference. An example of this is distance: A Vector is a quantity that has both magnitude and direction. An example of this is displacement: It uses the formula: Instantaneous velocity is the velocity of an object at a specific instant in time. It is calculated by finding the slope of the tangent to the point in time. The tangent is an imaginary line if you were to create a line based on the specific point in time that you were measuring for. You create a tangent line by drawing a line through the point you are focusing on and making sure that the line comes close to point directly to the sides of the main coordinate. It is important to know that position is a vector. When looking at the position in relation to the reference point, you have to remember that any sections of the graph beneath the x-axis are negative and all sections of the graph above the x-axis are positive. When calculating the total displacement, you have to subtract the negative values of area under the lines of a position time graph, and add the positive values of area. On a daily bases we see and interact with moving objects. Now it is time to understand the science behind all of these motions. Distance is the total length of the path travelled by an object in motion. Direction is the line an object moves along from a particular starting point. There are a few different types of motion. Uniform motion is constant and does not vary in any way. Non- Uniform Motion is motion that is not at a constant speed or not in a straight line. This may also be called accelerated motion. Chapter 5 : Grade 11 Physics Review Kinematics K.V. Aizawl KINEMATICS *rest and Motion are relative terms, nobody can exist in a state of absolute rest or of absolute motion. *One dimensional motion: The motion of an object is said to be one dimensional motion if only one out of three coordinates specifying the position of the object change with time. Chapter 6 : Class 11 â Physics â Chapter 3, 4 â Kinematics Exam-PCM (Class XI and XII) Class 11 Physics Notes Chapter 2 Kinematics PDF Free Download for CBSE NCERT Exam Preparation. Chapter 7 : CBSE Class 11 Physics Notes AglaSem Schools Grade 11 Physics - Kinematics Review - Download as Word Doc.doc), PDF File.pdf), Text File.txt) or read online. Scribd is the world's largest social reading and publishing site. Search Search. Chapter 8 : Kinematics, Chapter Notes, Class 11, Physics (IIT-JEE & AIPMT) EduRev Notes The Physics Classroom» Physics Tutorial» 1-D Kinematics. 1-D Kinematics. Lesson 1 - Describing Motion with Words; Introduction; Kinematic Equations and Graphs;. Chapter 9 : Unit 1 â Kinematics Ms. Rousseau's Classroom The materials and information provided on this website are for reference purposes only. Click Here for complete Page 4

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