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OCR Gateway P3g
Fichas del conjunto (6)
- 1P3g - Falling Safely.
- 2Falling ObjectsAll objects fall with the same acceleration due to gravity, as long as the effect of air resistance is very small.
- 3The size of air resistanceThe size of air resistance force on a falling object depends on:
-it's cross sectional area - the larger the area the greater the air resistance.
-its speed, the faster it falls the greater the air resistance. - 4Terminal SpeedWhen objects fall through the Earth's atmosphere they get faster and faster until they reach a terminal speed. This is when the upwards force (air resistance) and downwards force (weight) equal each other. At this point the object travels at its fastest speed.
- 5Factors that affect fallingThe factors affecting the terminal speed of a falling object include:
- its mass
- its surface area
- the acceleration due to gravity, g. - 6On the MoonThere is no drag on falling objects when there is no atmosphere. This means that the acceleration of falling objects due to gravity is the same whatever their mass and shape.
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- Fichas sobre OCR Gateway P3g, creado por Zaaaara el 29/05/2014.
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- Zaaaara
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