(i) If an object travels in a straight line and its velocity increases or decreases by equal amounts in equal intervals of time, then the body is said to be in uniform acceleration. 6. system. It is a vector quantity; the acceleration is taken to be positive if it is in the direction of velocity and negative when it is opposite to the direction of velocity. Examples of uniform acceleration include a ball under free fall, a ball rolling on an inclined plane and a car accelerating on a straight, traffic-free road. Blog. Question Bank Solutions 8008. Speed, velocity and acceleration test questions Fill in the Blank Questions 1. If the radius of the circular track is 105 metres, calculate his speed. Concept Notes & Videos & Videos 287. (a) Acceleration due to gravity (g): The acceleration of freely falling body under the action of gravity of the earth is called Eg. 8. A ball is thrown vertically upward. non-uniform acceleration? Question 4 Define the term non-uniform acceleration.Give one example? Later it slows down and comes to rest in 5s. NCERT Solutions In text and Video From Class 9 to 12 all Subject Uniform Circular Motion Definitions With Examples Give One Example of a Uniformly Accelerated Motion. Define the term “uniform acceleration”. 7. Extra Questions for Class 9 Science Chapter 8 Motion with Answers Solutions. A change in position is called: 11. unit of acceleration? (c) When is acceleration due to gravity (i) positive? Question 1. Draw the shape of the distance-time graph for uniform and non-uniform motion of object. Learn Maths with all NCERT Solutions Class 6 Class 7 Class 8 Class 9 Class 10 Class 11 Class 12. If the object covers unequal distances in equal intervals of time, it is said to be in non-uniform motion. Define non-uniform acceleration with an example. Ans : Uniform acceleration : An object has a uniform acceleration if it travels in a straight line and its velocity increases or decreases by equal amounts in equal intervals of time. (a) Uniform circular motion (b) Accelerated circular motion (c) Non-uniform circular motion (d) Linear motion (Q.13) A cyclist goes around a circular track once every 2 minutes. calculate the average speed. Thus, SI unit of acceleration (a) `=(m//s)/s` `=m//s^2 or m//s^(-2)` Acceleration in the case of Uniform Velocity: In the case of uniform velocity, the speed or direction of a moving object is not changed and thus there is no change in acceleration. Draw a graph to show the motion of a body with uniform acceleration. Q 16 We know that acceleration is the rate of change of velocity. Which of the following graphs is representing uniform acceleration'? and S.I. Question 3 Define the term uniform acceleration.Give one example? Define the Term Uniform Acceleration. ; The motion of a freely falling body is an example of uniformly accelerated motion. Question 10. This document is highly rated by Class 9 students and has been viewed 8691 times. Define uniform and non - uniform acceleration. Learn the concepts of Class 11 Physics Motion in a Straight Line with Videos and Stories. For example : The motion of a freely falling body has uniform acceleration. Its speed expressed in ms1 is: 12. Its velocity at the highest point is: 10. Uniform & Non-Uniform Motion. By dividing displacement of a moving body with time, we obtain: 9. Ans. (b) State its value in C.G.S. SI unit is ms -2 . 2. Question 1 What is meant by the term acceleration? Important Solutions 1. As the object covers equal distances in equal intervals of time, it is said to be in uniform motion. Define the Term Uniform Acceleration. Give one example of a uniformly accelerated motion.