This one is a presentation about the physics involved in soccer. I've tried to make it interesting with many animations and clips. I hope it is help for you and please tell me what should be done to make it look better. I look forward to you comments. Thanks~By Divyangna

1. Physics
and
Soccer…
by…Divyangna
Monga

3. The impossible shoT
From 30 meters out, Robert Carlos kicked a ball with the
outside of his left foot and curved the bal around a wall
of defenders into the upper right ninety of the goal.
Physics as well as hundreds of players who do this
everyday prove that this shot can be made.

4. WhaT’s involved?
There are six forces implicated in the resulting of this
shot~
Force of the kick/ velocity
Drag
Gravity
Lift
Weight
Magnus force

5. Force oF the kick/velocity
It is the force that makes the ball move in the first place.
The force causes the ball to move in a linear trajectory at
a certain speed if no other forces are involved.

6. drag
Drag is caused by air velocity.
If the ball is kicked, then it will
eventually stop because drag
is moving in the opposite
direction.

7. gravity
Gravity is a force that acts on all objects.
It pulls objects down towards the earth at a speed of
9.8m/s .
If a ball is kicked then it will eventually stop because the
earth’s gravity is pulling it down at a constant rate
against earth’s surface.

8. L
I
F
T

9. weight
Weight is a force that is always directed towards the centre of the
earth. In general, the magnitude of the weight depends on the mass
of an object. By rule, the weight of a major league soccer ball is one
pound (0.453592 kg). A soccer ball is hollow and inflated with high
pressure air, so the weight is distributed around the outside of the
ball. But we can often think of the weight as collected and acting
through a single point called the centre of gravity. The centre of
gravity is the average location of the weight of an object. To first
order, the centre of gravity for a soccer ball is located at the exact
centre of the ball. In flight, the ball rotates about the centre of
gravity.

10. Magnus forces
Magnus force is caused when there is pressure on both sides of an
object moving through the air or a fluid.
If there is decrease in pressure on one side of an object, then the
object will start to curve in that direction.
If a soccer ball is kicked with top spin, then it will fall to the ground
faster because gravity is helping it down.
If a soccer ball is kicked with down spin, the opposite happens, but
gravity will eventually pull it down.

11. result
This new kind of finesse inspired soccer players all over
the world to start curving soccer balls into the net.
It also brought nations and communities to watch this
improved sport, while showing scientists what the human
body can do.

12. net forces in soccer
The force of gravity on players.
The force of gravity on the soccer ball.
The force of friction between the ball and the ground.
The force of friction between the ball and the air.
The forces of the players’ feet when they kick the ball.
The force of the keepers’ body blocking the goal.
The force of the net stopping the ball after the goal is
scored.