Difference between revisions of "Free Fall"
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: All [[object]]s in '''free fall''' will [[accelerate]] at the same rate, regardless of their [[mass]] or [[weight]]. However, [[object]]s do not always '''free fall''' due to [[Air Resistance|air resistance]]. For example a feather and a hammer have the same rate of '''free fall''' in a [[vacuum]] but in an [[atmosphere]] [[Air Resistance|air resistance]] has a greater effect on the feather so they appear to [[accelerate]] at different rates. | : All [[object]]s in '''free fall''' will [[accelerate]] at the same rate, regardless of their [[mass]] or [[weight]]. However, [[object]]s do not always '''free fall''' due to [[Air Resistance|air resistance]]. For example a feather and a hammer have the same rate of '''free fall''' in a [[vacuum]] but in an [[atmosphere]] [[Air Resistance|air resistance]] has a greater effect on the feather so they appear to [[accelerate]] at different rates. | ||
: [[Object]]s on [[Earth]] [[accelerate]] during '''free fall''' at a rate of 9.8m/s/s. | : [[Object]]s on [[Earth]] [[accelerate]] during '''free fall''' at a rate of 9.8m/s/s. | ||
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| + | ==Key Stage 5== | ||
| + | ===Meaning=== | ||
| + | The [[acceleration]] of free fall is the [[acceleration]] experienced by an [[object]] only under the influence of [[gravity]], typically 9.8 m/s² on Earth. | ||
| + | |||
| + | ===About the Acceleration of Free Fall=== | ||
| + | |||
| + | *Also known as gravitational [[acceleration]]. | ||
| + | *It is constant for all [[object]]s near the [[Earth]]’s surface regardless of their [[mass]]. | ||
| + | *Represented by the symbol 'g'. | ||
| + | ===Examples=== | ||
| + | |||
| + | *Objects in a [[vacuum]] chamber fall at the same rate regardless of their [[mass]]. | ||
| + | *[[Free Fall|Free fall]] rides in amusement parks simulate this [[acceleration]]. | ||
Revision as of 16:56, 17 May 2024
Contents
Key Stage 4
Meaning
Free fall is when an object accelerates due to only its weight due to gravity.
About Free Fall
- During free fall the only force acting on an object is its weight due to gravity.
- Objects in a gravitational field accelerate at a rate which is the same as the gravitational field strength.
- All objects in free fall will accelerate at the same rate, regardless of their mass or weight. However, objects do not always free fall due to air resistance. For example a feather and a hammer have the same rate of free fall in a vacuum but in an atmosphere air resistance has a greater effect on the feather so they appear to accelerate at different rates.
- Objects on Earth accelerate during free fall at a rate of 9.8m/s/s.
Key Stage 5
Meaning
The acceleration of free fall is the acceleration experienced by an object only under the influence of gravity, typically 9.8 m/s² on Earth.
About the Acceleration of Free Fall
- Also known as gravitational acceleration.
- It is constant for all objects near the Earth’s surface regardless of their mass.
- Represented by the symbol 'g'.
Examples
- Objects in a vacuum chamber fall at the same rate regardless of their mass.
- Free fall rides in amusement parks simulate this acceleration.