MOTIONM. S. KHAN

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Table of contents

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What is motion?

Types of motion

Motion diagram

Particle model

Frame of reference

What is motion?

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A motion is defined as the change in position or orientation of an object

with respect to its surrounding.

Types of motion?

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Linear motion Free fall Curvilinear motion Projectile motion

Circular motion Rotational motion Oscillatory motion

Linear motion

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The motion of an object along a straight path is called a linear motion.

A train moving on a straight rail track

Vehicles moving on a straight highway

Sprinters running on straight athletic tracks

A rocket launching from its launch pad

Free fall

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The motion of an object along a vertical line under the action of gravity only is called a free fall.

Motion of sky divers Motion of a bungee jumper

Motion of a man jumping into river

Motion of a released stone

Curvilinear motion

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The motion of an object along a curved path is called a curvilinear motion.

Motion of a car along a curved road

Motion of a cable car along a steel cable

Motion of a roller coaster along its track

Motion of fighter jets during national parade

Projectile motion

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The motion of an object along a parabolic path under the action of gravity only is called a projectile motion.

Motion of a long jumper Motion of a basket ball Motion of a javelin

missileMotion of the stream of

a fountain water

Circular motion

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The motion of an object along a circular path is called a circular motion.

Motion of planets around the sun

Motion of a moon around the earth

Motion of electrons around the nucleus

Motion of a whirling hammer

Rotational motion

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The spinning motion of an object about its center of axis is called a rotational motion.

Motion of a spinning top

Motion of a giant wheel

Motion of a merry go round

Motion of the blades of a wind turbine

Oscillatory motion

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The to and fro motion of an object about a fixed point is called an oscillatory motion.

Motion of the pendulum of a clock

Motion of a playground swings

Motion of the pistons of an engine

Motion of the strings of a guitar

Motion diagram

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Motion diagram is the pictorial representation of a motion. In motion diagram the images are spaced at equal time

intervals.

A cyclist performing a linear motion A skate boarder performing a projectile motion

Particle model

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Particle model is the simplification of a motion diagram. In particle model the object is replaced by a single point.

Motion diagram

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. .Particle model

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Frame of reference

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It is a framework from where we observe & measure the physical quantities.

When we are standing on the ground, that is our frame of reference.

If we are sitting on the seat of a moving car, now the car is our frame of reference.

In physics, we often draw a set of coordinate axes to represent a frame of reference.