Episode 208: Preparation for drag forces

Main aims
Students will:

  • recognise and understand the terms up thrust, drag, lift, air resistance and terminal velocity
  • understand that at terminal velocity the net force on the moving body is zero
  • be able to explain the acceleration of a body up to terminal velocity in terms of the forces acting on the body

Prior knowledge
Students may have previously studied projectile motion, in which the effects of air resistance are ignored.

Where this leads
This topic has been considered without adopting a quantitative approach. Many of the ideas could be revisited in numerical problems once Newton’s second law of motion has been covered.

Thrust and drag forces acting on a car

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Episode 208: Preparation for drag forces (Word, 36 KB)