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an object is moving with uniform deceleration which statement describes its motion

What is the acceleration of a body moving with uniform velocity? Give reason for your choice. A car is moving with a uniform speed of 15.0m/s along a straight path. A bus increases its speed from 36 km/hr to 72 km/hr in 10 seconds. Bus X travels a distance of 360km in 5 hours whereas bus Y travels a distance of 476lm in 7 hours. Area of rectangle OADC and the area of triangle ABD is given as: Area of triangle ABD = (½)(area of rectangle AEBD), Therefore, distance travelled, s = ut + ½ at2, Q40. A car moving with uniform speed is an example of uniform linear motion. A train travelling at 20 m/s accelerates at 0.5 m/s2 for 30s. The area occupied under the velocity-time graph is the distance travelled by the moving body. A bus moving along a straight line at 20 m/s undergoes an acceleration of 4 m/s2. Calculate the average speed for the entire train journey. Name the two quantities the slope of whose graph gives: Q28. Q6. An object is moving with constant non-zero velocity. ii) Uniform speed refers to constant speed of a moving body in which the body covers an equal distance in equal time intervals. Time taken, T1 to travel from A to B = distance travelled/speed, Time taken, T2 from B to a = distance travelled/speed, Total distance from A to B and B to A = 2D, Therefore, average speed = total distance travelled/total time taken = 24 km/h. a) In the first part, speed of the train is 30 km/h for distance of 15 km. Under which condition is the magnitude of average velocity equal to average speed? The magnitude of average velocity is equal to the average speed when the object moves in a single straight line. The average velocity of a moving body can be zero. Q8. Cloudflare Ray ID: 5ee82157f93ef784 Acceleration = change in velocity/time taken, b) Initial velocity, u = 54 km/h = 15 m/s. The retardation due to brakes is 2.5 m/s2. a) Define speed. a) What term is used to denote the change of velocity with time? Answer: The correct answer is c) RS. b) A body starting from rest travels with uniform acceleration. increases by …………. iii) Speed is defined as the distance travelled in unit time while velocity is the distance travelled in unit time in a particular direction. This photograph shows a man-made ‘communications satellite’ going round the earth in a circular orbit. a) Acceleration is defined as the rate of change in a body’s velocity with respect to time. What is the distance covered by the car in 12.0 minutes? b) What changes continuously in uniform circular motion? State the SI unit of acceleration. Yes, uniform circular motion is accelerated as the velocity changes due to continuous change in the direction of the motion. s = ut + ½ at2 where the symbols have their usual meanings. An important characteristic of uniform circular motion is that the direction of motion changes continuously with time. To identify an objects position, you must compare its location with that of another object or place. Q10. Which of the following statement is correct regarding velocity and speed of a moving body? Name the physical quantity obtained by diving ‘distance travelled’ by ‘time taken’ to travel that distance. Q5. There are different types of graphs that are used and they are: The motion of an object can be of different types depending on the type of path the object is moving through and they are: Scalar and vector are the two quantities that are used in motion. Q11. If velocity does not change there is no _____________. Q42. Q51. In each case, the acceleration of the object is in the negative direction. Q36. The area under a speed-time graph represents a physical quantity which has the unit of: Q45. a) Define velocity. Taking the speed of sound as 1100 km/h at the aircraft’s altitude how long will it take to reach the ‘sound barrier’? Moon moving around the earth is an example. b) Odometer in a car is used for recording the distance travelled by the car. Four cars A, B, C, and D are moving on a levelled, straight road. Your IP: 50.115.120.236 What does the slope of a distance-time graph indicate? What do you understand by the terms ‘uniform motion’ and ‘non-uniform motion’? We can see the dish antennae, and solar panels clearly inn this photograph. the change in position of one object in relation to the position of some fixed object/. a) What remains constant in uniform circular motion? Q23. A snail covers a distance of 100 meters in 50 hours. Which of the two can be zero under certain conditions: average speed of a moving body or average velocity of a moving body? If the velocity-time graph for this car is a horizontal line parallel to the time axis, then the velocity of car at the end of 25s will be: Q48. d) Velocity is the rate of change of ……….. it is measured in ………. The speed of the body is constant or uniform. The SI unit of velocity is m/s. b) Define the term ‘uniform acceleration’. Q13. it is measured in ……. Your email address will not be published. Q17. Speed: the ratio of the distance an object moves to the amount of time the object moves. The velocity-time graph for part of a train journey is a horizontal straight line. Q21. Name the physical quantity which gives us an idea of how slow or fast a body is moving. This means that every ……….. its …………. Q50. What type of motion is exhibited by a freely falling body? A cyclist is travelling at 15 m/s. Thus, Displcement `= AE xx ED` Velocity time graph of an object moving with uniform decreasing velocity: The slope of the velocity time graph of an object moving with uniform decreasing velocity with uniform acceleration is a downwards straight line. How far will it travel in this time? Performance & security by Cloudflare, Please complete the security check to access. Which of the following could not be a unit of acceleration? The body is accelerated uniformly with which is represented by a. Q27. c) No, because when a body takes a round trip from its final position to the initial position, then the distance travelled will be a non-zero whereas the displacement is zero. Which one of the following describes an object in motion? That other object or object is called.. BE is the perpendicular from point B to OE. Along with speed, the direction of the body should be known. Q38. Define motion. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. b) A body is said to have a uniform acceleration when it travels in a straight line with its velocity increasing at equal intervals of time. Total time taken = 15 minutes = 15/60 = 0.25 hour, Average speed = total distance travelled/total time taken = 0.4 km/h. The distance travelled by the body is the area under the OABC. It travels 150 m in 5 seconds: d) How long does it take to travel 240 m? Name the force which brings about uniform circular motion. Q34. Q31. Q26. What is his acceleration? Give the meaning of each symbol which occurs in it. Find its acceleration. A train travels the first 15 km at a uniform speed of 30 km/h, the next 75 km at a uniform speed of 50 km/h and the last 10 km at a uniform speed of 20 km/h. Q2. Would the distance travelled by the object also be zero? Q52. e) Acceleration is the rate of change of ………. Acceleration is a vector quantity, which has both magnitude and direction. Oscillatory motion: When the object is moving in a to and fro path with respect to its origin. A train starting from rest moves with a uniform acceleration of 0.2 m/s2 for 5 minutes. The acceleration of a body is zero that has a uniform velocity. This speed is equal to: Q47. Examples of uniform circular motion is: i) Motion of artificial satellites around the earth. OC represents the time t. A perpendicular is drawn CB from point C and AD is drawn parallel to OC. Q24. Negative acceleration is also known as retardation. Q14. Is the motion uniform or accelerated? Q35. The deceleration produced in this case will be: Q49. A body is said to be in uniform motion when it covers an equal distances in equal intervals of time. Given the meaning of each symbol which occurs in them. Show by using the graphical method that. A freely falling body has a non-uniform motion because in the initial 1 second the distance covered is small and in the later 1 second the distance covered is large. After 2 seconds, its speed will be: Q43. An aircraft travelling at 600 km/h accelerates steadily at 10 km/h per second. This means that the boy is: The correct answer c) in accelerated motion.

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