Comparing the speeds of different parachutes
I can explain how the size of a parachute affects its top speed.
Comparing the speeds of different parachutes
I can explain how the size of a parachute affects its top speed.
Lesson details
Key learning points
- The larger the surface of a parachute, the bigger its drag.
- Gravity pulls down with a steady force.
- At top speed the force of drag on a parachute is the same size as the force of gravity on the jumper.
Common misconception
Students may think that all objects fall at the same rate (this is only true in a vacuum).
Use force diagrams to discuss the effect of different sized drag on the parachutes, linking this to resultant force and acceleration.
Keywords
Drag - When an object moves through a fluid there is a drag force that opposes the movement.
Parachute - A parachute is used to increase the size of drag forces. This slows down the object it is attached to.
Gravitational force - The gravitational force on something pulls it downwards, towards Earth.
Resultant force - A resultant force is the overall effect of a set of forces on an object, taking their directions into account.
Content guidance
- Risk assessment required - equipment
Supervision
Adult supervision required
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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Starter quiz
6 Questions
Exit quiz
6 Questions
A force that opposes movement through gases and liquids.
A device used to slow fast objects, using drag forces.
The force pulling an object downwards to Earth.
The overall effect of a set of forces on an object.