Hitting+the+limit

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Hitting the limit
Describe how the forces on a skydiver change during a jump. Explain why skydivers reach a maximum speed. Interpret distance–time graphs. Interpret speed–time graphs.
 * Outcomes (what you will be able to do by the end of this lesson) **


 * Starter **
 * Review completed work from last lesson
 * Describe a journey and see if your partner can sketch a distance time graph to match it

> > media type="file" key="ES9_Kd134_03vco.flv" width="640" height="480" > Alternatively use this interactive BBC Bitesize tutorial to understand resultant forces and terminal velocity > > media type="file" key="ES9_Kd138_04ani.swf" width="640" height="480" > > > >
 * Activities**
 * 1) We can view journeys graphically as distance time graphs. This skoool tutorial explains how.
 * 1) Watch this video to understand what limits the top speed of a car (or any vehicle)
 * 1) Does the speed of a skydiver change during his/her fall? Use the animation to find out.
 * 1) Now review these BBC Bitesize notes on how to read velocity-time graphs using falling objects as an example.
 * 1) In groups complete the worksheet on resultant forces during the sky dive. Review the questions as a class to see who has done best.
 * 1) Test your understanding by completing a parachute jump.
 * 1) Additionally complete textbook questions 2,3 from p134-5 of Exploring Science 9.
 * 1) Extension: Take your understnading of terminal velocity, acceleration and graphs a step further. Try to complete this worksheet on graphs and acceleration


 * Summary **
 * Review completed classwork / key term quiz


 * Homework activity options **
 * Download complete the gapfill on Hitting the limit, print-off and stick into your exercise book. You can copy and complete if you have a problem printing.


 * Help and review**


 * Useful extras**