motion in straight line class 11 mcq pdf

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CBSE Class 11 Maths Syllabus for the academic year 2022-23 is available for free download in PDF format. Let u and a be the initial speed and acceleration of the body. Question 9. If S1 and S2 be the distances covered by the two cars before coming to rest (i.e. Answer: The motion of the body is uniform motion (constant speed). (e) instantaneous speed Given, Look at the graphs (a) to (d) Fig. (d) 1, Question 10. = 0 + 10 x 2 = 20 m/s, In next 4 s, 8. Acceleration is vector quantity and its SI unit is .. 7. Given, If a body travels equal distance in equal intervals of time in straight line then motion is Down: 1. (c) Speed: Scalar quantity Answer: NCERT Solutions. Now, time taken to return home by an auto = 2.5/5 h =1/10 h =6 minute A stone is thrown upward and it rises to a height of 100 m. The relative velocity of the stone w.r.t. (b) total distance travelled. Question 12. Acceleration: It is defined as the time rate of change of velocity of an object. They were travelling at 72 km h-1 and 60 km h-1 respectively. The displacement-time graph of a moving object is a straight line. Determine its position, velocity and acceleration at t = O. It is the actual length of the path covered by a moving body. (d) A tumbling beaker that has slipped off the edge of table. Answer: Distance to be covered = 50 m = 0.05 km 0.05 km (i) Why should non-biodegradable products not be used? putting t = 2, v = 10 + 3 22 = 10 + 3 4 = 22ms-1 (a) Velocity time graph for uniform motion (Const. If u = initial relative speed of 1 st w.r.t. t1 = t2 = t3 = 1 s = time intervals, If x1, x2 and x3 be the distances covered in these seconds resp., then, Question 23. Figure gives a speed-time graph of a particle in motion along a constant direction. Derivation : We know that acceleration is given by a =\(\frac{v_{2}-v_{1}}{t_{2}-t_{1}}\) , where v1 and v2, t1 and t2 are as in (1). Following two equations represents the x t relation for the motion of an objects. (a) When the displacement-time graph is parallel to the displacement axis, the velocity of the particle is infinity. 6. (a) If X0 > 0, v > 0 i.e. Question 4. a = g = 9.8 ms-2 Question 3. NCERT Solutions. What is the formula for calculating average speed in this situation? Answer: The to-and-fro motion of a body along the same path is called oscillatory motion. A simple pendulum hangs from the roof of a train. s1 = \(\frac{1}{2}\) x 5 x (8)2 (iii) At t = -1.2 s, x < 0, but here on increasing the time t, value of x becomes less negative. Question 8. The average velocity of the boy during the whole journey is Answer: Question 3. the particle is moving with variable velocity. If Vj and v0 represent the velocities of jet and observer respectively, then vj vo = 500 km h-1 v = \(\frac{\mathrm{d} \mathrm{x}}{\mathrm{dt}}\) = 4.2t 15 = 8t 15 (2). EXERCISE 7.2 CLASS 9 MATHS CHAPTER 7-GEOMETRY OF TRIANGLES: NCERT Solutions for Class 9 Maths Chapter 7 Geometry of Triangles Ex 7.2 given here are prepared by the subject experts. Plot the speed-time graph of its motion between t =0 to 12 s. (c) Retarded (d) Velocity Here, u = 0, u = 20m/s and t = 2s Acceleration, a = \(\frac{v-u}{t}=\frac{20-0}{10}\) (c) in accelerated motion The equations (a), (b) and (e) represent uniform acceleration. both positive, then the position-time graph is as shown in Fig. An object is in uniform motion along a straight line. What is his displacement? (b) at rest Let T = total time of flight in which the rocket attains maximum height, 9. Question 17. = 2r = 2 x 50 m = 100m And the motorcycle starts with a constant acceleration a. Therefore ball cannot be considered as point object. (b) Positive, negative If the speed of the car becomes v, then what will be the minimum distance over which it can be stopped? The importance of a position-time graph is that its slope gives the velocity of the object in uniform motion. OA part of the graph represents the uniformly accelerated motion of the body. (i) during upward motion of ball before reaching the highest point position (as well as displacement) x = +ve, velocity v = -ve and acceleration a = g = +ve. Or It is shown in the graph. Motion MCQ Chapter 8 Question 8. (Assume upward acceleration is g and downward acceleration to be +g). VB = 90 km h-1 = 25 ms-1, (Takingthe velocity of car A positive N v and car B negative) t = \(\frac{200}{20}\) = 10s. A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is, No force acts on the object having uniform motion. Which of the following formula are correct for describing the motion of the particle over the time interval fromt1 to t2? (b) the displacement Answer: All other units vary from person to person, Question 2. Answer: (c) A i.e. Net vertical distance covered by the stone, y = 76 m. Which of the velocity or speed is measured by the speedometer of a vehicle? A straight line is a curve where every point on the line segment joining any two points lies on it. (h) Scalar quantity Answer: The motion of the body is uniform motion (constant speed). 1. If BC = x, then usirig the relation, So, the graph is in accordance with the quadratic equation. Along time-axis, one division equals 1 hour. NCERT Library; RD Sharma. x = (t 3)2 (b) Centimetre Acceleration of the body is zero as the velocity is constant. NCERT Solutions for Class 11 Physics Chapter 10 Mechanical Properties of Fluids is a prime study resource on which you can rely to prepare for the final examination as well as for the entrance examinations. (1) For accelerated motion, using equations, v = u + at, we get i.e. Nursing, Choosing A Career Essay | Essay on Choosing A Career for Students and Children in English, Vocational Education Essay | Essay on Vocational Education for Students and Children in English, 10 Lines on Healthy Food for Students and Children in English, Motivational Quotes for Medical Students | Inspirational Quotes for Med School, Nursing School or PT School Students, MEC Courses List | Check Mathematics, Economics, and Commerce Subjects, Top Institutes, Jobs, Scope for Arts & Commerce Students, Courses after BA | After BA What I Can do? (b) velocity t 1 = Time taken by the second stone to reach the ground and (c) Non-uniform motion When the velocity is constant. What are its characteristics? Motion Class 9 Extra QuestionsNumericals, Question 8. 5. Answer: (d) both (a) and (b) How would the relative velocity be altered if the scooter is ahead of the car? Give one example where the displacement is zero but the distance traveled is not zero. The motion of a train is described by the velocity-time graph as shown in the figure given below. 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Relative Velocity: The relative velocity of a moving object with respect to another object is defined as the rate of change of relative position of one object w.r.i. In this case, the slope of the curve gives the average velocity (0)2 (20)2 = 2 (-2)s A body is projected vertically upward from the ground. Raju was driving the car. Answer: When is the average velocity over an interval of time becomes equal to instantaneous velocity? (c) If X0 = ve, v = +ve, then the x t graph is as shown in Fig. If access. Explanation: Here the slope of the curve is zero, which means the object is stationary as v = 0. (d) If both x0 and v are ve, then the x -t graph is as shown in Fig. Area of speed-time graph gives State whether the following two graphs in Fig. Displacement has both magnitude and direction. Question 7. (c) with constant speed must have zero acceleration, Answer: Answer: Answer: (a) Oscillatory motion MCQ Questions for Class 6 Science with Answers were prepared based on the latest exam pattern. u1 = initial velocity O the other train is zero. (a) and when the relative velocity is non-zero, the length of the two vectors i.e. Question 34. Distance covered in one round = perimeter of the circular track of radius r Distance = AC x CD + \(\frac{1}{2}\) DE x DB = 10 x (40 20) + \(\frac{1}{2}\) x 10 x 5 = 225m. The area under the velocity-time curve represents which physical quantity? Read the above passage and answer the following questions: Question 2. Then (a). Relative velocity of B with respect to A Motion Class 9 MCQ With Answers Pdf Question 13. As last half of the journey takes 1 s, so t cannot be less than 1 s. Its speed Let after a time t, the ball stops i.e. a person sitting in a moving train is at rest w.r.t. The relation between velocity and time during uniformly accelerated, straight-line motion is a simple one. Then, when the graph is parallel to the displacement axis, then t = 0, so velocity = infinity. Motion of body in circular path 2. Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 ms-1 It implies that the boy is If a body travels equal distance in equal intervals of time in straight line then motion is v = velocity attained by the rocket after 30s = ? Thus there will be no collision, if (d) Greater than or equal to one. Answer: Let vb be the speed of each bus. Class 9 Motion Numericals Extra Questions Question 4. Time taken from going A to B; t1 = \(\frac {x}{30}\) h 4. Answer: Speed = \(\frac{\text { Distance travelled by the object }}{\text { Time taken }}\). stationary observer = (9 + 4) km h-1 = 13 km h-1. Metre. Answer:(a) A lives closer to school than B, because B has to cover higher distances [OP < OQ], NCERT Books for Class 11 All Subjects in Hindi and English Medium for session 2022-2023 UP Board, CBSE, Gujrat, MP Board and other boards. Question 29. If the position and velocity have opposite signs, the particle is moving towards the origin. Answer: (a) Oscillation of a pendulum = Length of track = r (b) Greater than one Give an example. The motion is always in the same direction. (d) Velocity: Vector quantity Here particle accelerates for 2 seconds. 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A body describes 10m in the third second and 12m in the Sth second with uniform acceleration. a = g = acce. What will you say about the motion of an object if its distance-time graph is a straight line with having a constant angle with a time axis? Refer to the Motion in a Straight Line Class 11 MCQs Questions with Answers here along with a detailed explanation. If x be the total displacement, then Question 4. At which point P, Q, R, the stone has : showing simple harmonic motion of a particle, the signs of position, velocity and acceleration are as given below. NCERT Solutions Class 11 Physics Chapter 7 Free PDF Download. What does the speedometer of an automobile measure? Question 6. Find the distance covered by it in : 1. Here, a = g = 10ms-2 for t = 30s Answer:(a) A ball at rest on a smooth floor is kicked. Question 37. Expand v to v - u. and condense t to t. a = (v u)/t . Answer: (c) increasing acceleration Distance travelled in the interval between 4th and 5th sec. 11. Average velocity = 0 m/s. Answer: Question 3. NCERT Books for Class 11 All Subjects in Hindi and English Medium for session 2022-2023 UP Board, CBSE, Gujrat, MP Board and other boards. (c) a carom coin rebounding from the side of the board, During the study of uniform or non-uniform motion, we will learn to find the average speed or speed during a specific duration. Rate of change of velocity It Represents motion with uniform velocity. Try your self, (c) Find the velocity of B with respect to A?

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motion in straight line class 11 mcq pdf