Mag. Ronald BinderMag. Veronika Ruedegger

INLOT – SKI - JUMPING

Lesson Plan

Guided Research Model

www.virtuelleschule.at/inlot

Mag. Ronald BinderMag. Veronika Ruedegger

General Information

Duration: 8 x 50 min

Vocabulary: velocity, acceleration, force, energy, inclined plane, aerodynamics

Tools and Materials: notebooks, InLoT: hardware and software, internet

Mag. Ronald BinderMag. Veronika Ruedegger

General Informations

Aims and Objectives:

Students should

• deepen their basic knowledge in mechanics by studying one field of sports

• be able to use java applets independently in order to gain profound knowledge about forces

• be able to use InLoT hard- and software and analyse the obtained data

• learn how to organise an experiment outside the classroom

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 1

Stimulation: 1 x 50 min

presentation of selected photos of ski jumpers, pole vaulters,…

giving some impressions of a ski jump training camp (video clips)

discussion about accelaration and forces acting on ski jumpers

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 2

Scientific Prediction: 1 x 25 min

Students should find out about the following:

what forces can be exerted on people ? do an internet research and give examples of different accelarations of people

how does the acceleration of a ski jumper change during the different phases of the jump

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 3

Experimental Activities

11 x 25 min

Run the java applets in order to understand how vectors combine to form the resultant on inclined planes

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 3

Experimental Activities

21 x 50 min

Plotting the graph of a vertical jump using the InLoT system

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 3

Experimental Activities

31 x 50 min

Plotting thegraph of a skijump from the K90 – jumpinghill

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 4

Abstraction of the findings 1:vertical jump: 2 x 50 min

Bouncing force: F = m·a ,

m … mass of the jumpera … acceleration plotted in the diagram

Impulse: Δp = F·Δt,

Δt … time to jump off the ground (plotted in the diagram)

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 4

Height of jump

t … half the time of the jumpg … acceleration of gravity

Landing velocity v:

potential energy equals kinetic energy:

EPOT = EKINmgh = mv2/2

2

2tgh

ghv 2

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 4

Breaking distance:

a ...deceleration (plotted in the diagram)t … amount of time to decelerate (plotted in the diagram)

2t2as

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 4

Abstraction of the findings 2:ski jump: 1 x 50 min

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 4

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 4

EPOT = EKIN

mgh = mv^2/2

rva

rmvF

2

Z

2

Z N297cA2vρF A

2

A

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 5

Consolidation: 1 x 50 min

discussion of evolving questions or problems

analysis of a video which shows the vectors of acceleration at any time

Mag. Ronald BinderMag. Veronika Ruedegger

Educational Phase 5

Exercises:

Hot Potatoes – Quiz about the mechanics of ski jumping Plotting the graph of one´s own vertical jump