a) Motion is the way objects or things move from one place to another. It's all about how things change their position or location over time.
b) For example, when you walk, run, or ride a bike, you are experiencing motion.
c) There are different types of motion. Some objects move in a straight line, like a car driving on a road. Some objects move in a circular path, like a spinning top. Others move back and forth, like a swing. These different ways objects move are called different types of motion.
d) Motion can also be uniform or non-uniform.
Uniform Motion |
Non-Uniform Motion |
Uniform motion is when an object moves in a way that its speed remains the same throughout its entire journey. |
Non-uniform motion is when an object moves in a way that its speed changes during its journey. |
It means that the object covers equal distances in equal intervals of time. |
It means that the object covers unequal distances in equal intervals of time. |
The object follows a specific pattern or order. |
The object may not follow a specific pattern or order. |
Uniform motion is predictable and regular. |
Non-uniform motion can be unpredictable or irregular in nature. |
Examples: i) An object moving at a constant speed on a straight road ii) Pendulum swinging with the same speed |
Examples: i) Car slowing down and speeding up in traffic ii) Person walking at different speeds |
a) Translatory motion refers to the movement of an object in a straight line. It involves the displacement of an object from one position to another without any rotation.
b) For example, a car moving along a straight road or a ball rolling on a flat surface.
Translatory motion can be further classified into different types based on the nature of the path followed by the object:
a) Circulatory motion involves the movement of an object in a circular path around a fixed point or axis.
b) Examples of circulatory motion include the spinning of a top, the rotation of the Earth around its axis, or the movement of a Ferris wheel.
Circulatory motion can also be classified into different types based on the axis of rotation and the nature of the circular path:
a) Oscillatory motion is when an object moves back and forth repeatedly around a central position. It's like a swinging motion or vibrations that go back and forth.
b) You can think of it as something that moves between two extreme points. For example, when you swing on a swing set, it moves back and forth, and that's an example of oscillatory motion.
c) Oscillatory motion can be categorized into two types:
i) Simple Harmonic Motion (SHM)
a) In SHM, the object moves back and forth in a way that the force pulling it back to the centre is directly proportional to how far it is from the centre.
b) It's like a rubber band pulling something back towards the middle.
c) Examples of SHM include the swinging of a pendulum (like a grandfather clock).
ii) Damped Oscillation
a) Damped oscillation is a type of oscillatory motion where the back-and-forth motion gradually becomes smaller and eventually stops due to the presence of forces like friction or air resistance.
b) It's like when you swing on a swing, but someone applies a brake or holds onto the swing, causing it to slow down and eventually stop.
c) This is seen in situations where there is resistance or something slowing down the motion. An example of damped oscillation is the motion of a guitar string that gradually fades away.
The repetitive motion refers to any motion that is repeated over time. It can be further divided based on the nature of the repetition:
i) Periodic Motion
a) Periodic motion is a type of repetitive motion in which the motion is repeated at regular intervals of time.
b) It follows a specific pattern.
c) Examples include the oscillation of a pendulum, the rotation of the Earth around its axis, or the heartbeats.
ii) Non-Periodic Motion
a) Non-periodic motion is a type of repetitive motion in which the motion is not repeated at regular intervals.
b) The pattern may be irregular or unpredictable.
c) Examples include the motion of ocean waves, the movement of a car in city traffic, or the flickering of a candle flame.
a) Random motion, also known as chaotic motion, refers to the unpredictable and irregular motion of an object.
b) It lacks any specific pattern or order.
c) Examples of random motion include the movement of gas molecules or the flight pattern of a butterfly.
a) Distance refers to the total length covered by an object during its motion. It's like measuring how much ground an object has covered from start to finish, regardless of the direction.
b) For example, if you walk around a park in a circle, the distance you covered would be the entire length of the circle you walked.
c) Distance can be measured using various units, such as metres (m), kilometres (km), centimetres (cm), or even miles. The most common unit for measuring distance is metres. In our daily lives, we often use metres to talk about distances.
a) Displacement, on the other hand, is a measure of the change in position of an object. It takes into account both the distance and the direction of the movement from the starting point to the ending point.
b) Displacement is like drawing a straight line from the starting point to the ending point, regardless of the actual path taken.
c) For example, if you walk from your house to the park and then return back to your house, your displacement would be zero because you ended up in the same position where you started.
Distance |
Displacement |
It is the total length of the path travelled. |
It is the change in position from the starting point to the ending point. |
It is always positive. |
It can be positive, negative, or zero. |
It considers only magnitude. (Magnitude refers to the size or numerical value of a quantity, disregarding its direction.) |
It considers both magnitude and direction. |
Explore more about Force and Pressure |
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