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Physics Students: Projectile Motion

The document discusses projectile motion and provides information about key concepts such as: - Projectile motion involves objects moving through the air under the influence of gravity only. - There are three types of projectile motion: horizontal, vertical, and parabolic. - The horizontal velocity remains constant while the vertical velocity changes due to gravity. - Factors like the initial angle and velocity determine the motion trajectory, height, range, and time of flight. - Horizontal projectiles only require the equation X=ut to describe their motion.

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Ayman Eid
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521 views15 pages

Physics Students: Projectile Motion

The document discusses projectile motion and provides information about key concepts such as: - Projectile motion involves objects moving through the air under the influence of gravity only. - There are three types of projectile motion: horizontal, vertical, and parabolic. - The horizontal velocity remains constant while the vertical velocity changes due to gravity. - Factors like the initial angle and velocity determine the motion trajectory, height, range, and time of flight. - Horizontal projectiles only require the equation X=ut to describe their motion.

Uploaded by

Ayman Eid
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PPT, PDF, TXT or read online on Scribd
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PROJECTILE MOTION

SEMINAR PRESENTATION

SESSION-2017-18
PRESENTED BY-ANAND BIJARNIA
(151002003 )
Projectile Motion
When a Body in A free motion (moving through the air
without any forces other than gravity and air
resistance) it is called a Projectile Motion.

Normally air resistance is Ignored so the only force


acting upon the body is Gravity.

Gravity is a Uniform force acting downwords.


Types of Projectile Motion
Horizontal
 Motion of a ball rolling freely along a
level surface
 Horizontal velocity is ALWAYS
constant
Vertical
 Motion of a freely falling object
 Force due to gravity
 Vertical component of velocity changes
with time
Parabolic
 Path traced by an object accelerating
only in the vertical direction while
moving at constant horizontal velocity
Velocity Acceleration
The horizontal velocity of There is only acceleration in
projectile will remail the vertical direction,the
unchanged throughout the only velocity in the
motion. horizontal direction is
The vertical component constnt.The vertical motion
changes linearly because of of the projectile will be free
acceleration due to gravity is fall.
constant. The acceleration will be
equal to 9.8m/s^2
Equations
X- Component
x f  xi  v xi t
Y- Component
1 2
y f  y i  v yi t  gt
2
2 2
v yf  v yi  2 gy
v yf  v yi  gt
Vectors
v xi  vi cos( )
v yi  vi sin( )
Factors Affecting Projectile Motion
What two factors would affect projectile motion?
Angle
Initial velocity

Initial Velocity

Angle
Equations in horizontal and vertical
motions
Horizontal Vertical
Height of an Projectile
The greatest height that
the object will reach is
known as height of
projectile .
It does not depend on
mass of the object.
Range of an Projectile
The range of an
projectile is the distance
covered by the body till
it comes to rest in x-axis.
It does not depend on
mass of the object.
Time of flight of a Projectile
The total time for which
the projectile remains in
air is known as time of
flight.
Horizontal projectile
Horizontal projectiles are
easiest to work with

Only formula used is


X=ut
Horizontal Projectile
An object in free fall will
accelerate at 9.81 meters
per second squared
downwards.
When investigating the
trajectory of a projectile
we can look at the
horizontal motion and
the vertical motion
separately.
Horizontal Projectile
In the horizontal direction, there are no external
forces. Therefore, there is no acceleration. Velocity in
the horizontal direction is constant. This is because
all horizontal velocity vectors have same magnitude.
In the vertical direction, the only force acting on the
projectile is gravity. Therefore the object will
accelerate at a rate of 9.81 meters per second squared
downwards. Again, we see this is the diagram at the
right. The vertical velocity vectors increase in
magnitude as the projectile continues to move along
its trajectory.
Trajectory of a Projectile
The path described by an particle when its projected
at a certain angle and with initial velocity,v its known
as Trajectory of a Projectile.
Mathematically, a trajectory is described as a position
of an object over a particular time. A much simplified
example would by a ball or rock thrown upwards, the
path taken by the stone is determined by the
gravitational forces and resistance of air.
Trajectory Equation

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