A full description about this topic.

1. Physics of Sky
Jumping
Submitted by –
Khushi Gupta
Reg. no. 11608939
Roll no. B56

2. Introduction
Sky jumping is a sport involving
a sky diver jumping down from
an aero plane while it is flying
and parachuting to the ground.

3. Physics of sky jumping
 The physics behind sky jumping involves
the interaction between gravity and air
resistance.
 When a sky diver jumps out of a plane
he/she starts accelerating downwards,
until he/she reaches terminal speed.
 This is the speed at which the drag from
air resistance exactly balance the force of
gravity pulling him/her down.

4. Terms related to sky jumping
O Terminal velocity –
It depends on the weight of falling body. It
occurs during free fall when a falling body
experiences 0 acceleration this is because
of retarding force known as air resistance.

5. o Drag –
It resists the skydiver like normal air
resistance but goes in same direction as the
skydiver moves(downwards).When a sky
diver jumps from the airplane both gravity
and air resistance immediately begin to act
on his mass while gravity remains constant
air resistance does not exit.

6. It is easy to understand why he/she speed increases
when D<W.
By Newton’s second law
and summation of F = W-D, so his acceleration a is
(+ve) and therefore V increases.

7. Factors affecting sky diver
a) Force of air resistance :-
It depands upon two variables
 Speed of skydiver -
If speed of skydiver is more then air
resistance becomes more. As the skydiver
falls faster and faster , the amount of air
resistance increases more and more until it
approaches the magnitude of force of
gravity.

8.  Cross sectional area of the skydiver –
A skydiver in the spread eagle position
encounters more air resistance than a
skydiver who assumes tuck position or who
falls feet first
The greater cross-sectional area of a
skydiver in eagle position leads to a greater
air resistance and a tendency to reach a
slower terminal velocity.

9. 2. Mass of the sky diver –
The greater the mass of the skier, the most
kinetic energy it has, thus it moves further the
mass of the skier will increase the gravitational
acceleration acting upon it.
3.Ramp’s size –
The height of ramp affects the gravitational
potential energy so more KE is gained when
GPE is transferred to KE therefore the skydiver
moves further.