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Air resistance

Air resistance. WALT: What is air resistance?. What forces are acting on Bob?. Air resistance. Are air resistance and weight balanced?. Weight. As Bob falls, air resistance increases. Air resistance. Weight. Until Air resistance and weight are balanced. Air resistance.

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Air resistance

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  1. Air resistance WALT: What is air resistance?

  2. What forces are acting on Bob? Air resistance Are air resistance and weight balanced? Weight

  3. As Bob falls, air resistance increases... Air resistance Weight

  4. Until Air resistance and weight are balanced Air resistance Bob will now be travelling at a constant speed Weight

  5. But then Bob opens his parachute... Air resistance Air resistance is now bigger than weight. Will Bob speed up or slow down? Weight

  6. Bob will slow down until air resistance and weight are balanced again Air resistance Bob will now be travelling at a constant speed, do you think this will be faster or slower than before? Weight

  7. Bob is now travelling slowly enough to land safely

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