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Assertion: For motion along a straight line and in the same direction, the magnitude of average velocity is equal to the average speed. Reason: For motion along a straight line and in the same direction, the magnitude of displacement is not equal to the path

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: An object may have varying speed without having varying velocity. Reason: If the velocity is zero at an instant, the acceleration is zero at that

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Assertion: Acceleration of a moving particle can change its direction without any change in direction of velocity. Reason: If the direction of change in velocity vector changes, direction of acceleration vector does not

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: The `v-t` graph perpendicular to time axis is not possible in practice.Reason: Infinite acceleration cannot be realised in

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Assertion: In realistic situation, the `x-t, y-t and a-t` graphs will be smooth. Reason: Physically acceleration and velocity cannot change values abruptly at an

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: A body cannot be accelerated, when it is moving uniformly. Reason: When direction of motion of the body changes, then body does not have

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Assertion: For uniform motion, velocity is the same as the average velocity at all instants. Reason: In uniform motion along a straight line, the object covers equal distances in equal intervals of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: A body is momentarily at rest at the instant, if it reverse the direction. Reason: A body cannot have acceleration, if its velocity is zero at a given instant of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: In the `s-t` diagram as shown in figure, the body starts moving in positive direction but not from `s= 0`.Reason At `t = t_0`, velocity of body changes its direction of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Assertion: If acceleration of a particle moving in a straight line varies as `a prop t^n` then `s prop t^(n+2)` . Reason: If `a-t` graph is a straight line,then `s-t` graph may be a

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Average Speed and Average Velocity-When an object is in motion, its position changes with time. So, the quantity that describes how fast is the position changing w.r.t. time and in what direction is given by average velocity.It is defined as the change in position or displacement `(Deltax)` divided by the time interval `(Delta t)` in which that displacement occur. However, the quantity used to describe the rate of motion over the actual path, is average speed. It defined as the total distance travelled by the object divided by the total time taken.A `250 m` long train is moving with a

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Average Speed and Average Velocity-When an object is in motion, its position changes with time. So, the quantity that describes how fast is the position changing w.r.t. time and in what direction is given by average velocity.It is defined as the change in position or displacement `(Deltax)` divided by the time interval `(Delta t)` in which that displacement occur. However, the quantity used to describe the rate of motion over the actual path, is average speed. It defined as the total distance travelled by the object divided by the total time taken.A truck requires 3 hr to complete a journey

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Average Speed and Average Velocity-When an object is in motion, its position changes with time. So, the quantity that describes how fast is the position changing w.r.t. time and in what direction is given by average velocity.It is defined as the change in position or displacement `(Deltax)` divided by the time interval `(Delta t)` in which that displacement occur. However, the quantity used to describe the rate of motion over the actual path, is average speed. It defined as the total distance travelled by the object divided by the total time taken.Average speed of a car between points A and

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Average Speed and Average Velocity-When an object is in motion, its position changes with time. So, the quantity that describes how fast is the position changing w.r.t. time and in what direction is given by average velocity.It is defined as the change in position or displacement `(Deltax)` divided by the time interval `(Delta t)` in which that displacement occur. However, the quantity used to describe the rate of motion over the actual path, is average speed. It defined as the total distance travelled by the object divided by the total time taken.A cyclist is moving on a circular track of

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Average Speed and Average Velocity-When an object is in motion, its position changes with time. So, the quantity that describes how fast is the position changing w.r.t. time and in what direction is given by average velocity.It is defined as the change in position or displacement `(Deltax)` divided by the time interval `(Delta t)` in which that displacement occur. However, the quantity used to describe the rate of motion over the actual path, is average speed. It defined as the total distance travelled by the object divided by the total time taken.In the following graph, average velocity is geometrically represented

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Uniformly Accelerated Motion- The velocity of an object, in general, changes during its course of motion. Initially, at the time of Galileo, it was thought that, this change could be described by the rate of change of velocity with distance. But, through his studies of motion of freely falling objects and motion of objects on an inclined plane, Galileo concluded that, the rate of change of velocity with time is a constant of motion for all objects in free fall.This led to the concept of acceleration as the rate of change of velocity with time. The motion in which the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Uniformly Accelerated Motion- The velocity of an object, in general, changes during its course of motion. Initially, at the time of Galileo, it was thought that, this change could be described by the rate of change of velocity with distance. But, through his studies of motion of freely falling objects and motion of objects on an inclined plane, Galileo concluded that, the rate of change of velocity with time is a constant of motion for all objects in free fall.This led to the concept of acceleration as the rate of change of velocity with time. The motion in which the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Uniformly Accelerated Motion- The velocity of an object, in general, changes during its course of motion. Initially, at the time of Galileo, it was thought that, this change could be described by the rate of change of velocity with distance. But, through his studies of motion of freely falling objects and motion of objects on an inclined plane, Galileo concluded that, the rate of change of velocity with time is a constant of motion for all objects in free fall.This led to the concept of acceleration as the rate of change of velocity with time. The motion in which the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Uniformly Accelerated Motion- The velocity of an object, in general, changes during its course of motion. Initially, at the time of Galileo, it was thought that, this change could be described by the rate of change of velocity with distance. But, through his studies of motion of freely falling objects and motion of objects on an inclined plane, Galileo concluded that, the rate of change of velocity with time is a constant of motion for all objects in free fall.This led to the concept of acceleration as the rate of change of velocity with time. The motion in which the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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Uniformly Accelerated Motion- The velocity of an object, in general, changes during its course of motion. Initially, at the time of Galileo, it was thought that, this change could be described by the rate of change of velocity with distance. But, through his studies of motion of freely falling objects and motion of objects on an inclined plane, Galileo concluded that, the rate of change of velocity with time is a constant of motion for all objects in free fall.This led to the concept of acceleration as the rate of change of velocity with time. The motion in which the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

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