Difference between revisions of "Newton's First Law"
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==Key Stage 4== | ==Key Stage 4== | ||
===Meaning=== | ===Meaning=== | ||
| − | '''Newton's First Law''' states that "An [[object]] in motion will tend to stay in motion and an [[object]] at rest will tend to stay at rest unless an [[Unbalanced | + | '''Newton's First Law''' states that "An [[object]] in motion will tend to stay in motion in a straight line and an [[object]] at rest will tend to stay at rest unless an [[Unbalanced Forces|unbalanced force]] acts upon it." |
===About Newton's First Law=== | ===About Newton's First Law=== | ||
: '''Newton's First Law''' describes the fact that: | : '''Newton's First Law''' describes the fact that: | ||
:: If the [[Resultant Force|resultant force]] on an [[object]] is zero then it will continue to move at a constant [[velocity]]. | :: If the [[Resultant Force|resultant force]] on an [[object]] is zero then it will continue to move at a constant [[velocity]]. | ||
| − | :: If the [[Resultant Force|resultant force]] on an [[object]] is not | + | :: If the [[Resultant Force|resultant force]] on an [[object]] is not zero then an [[object]] will [[accelerate]] (change [[speed]] or direction). |
| − | : This means that if an [[object]] is [[observe]]d changing [[speed]] or direction then there must be an [[Unbalanced | + | : This means that if an [[object]] is [[observe]]d changing [[speed]] or direction then there must be an [[Unbalanced Forces|unbalanced force]] acting on it. |
| + | |||
| + | ===Examples=== | ||
| + | Stationary Object - The [[object]] remains at rest because the [[force]]s and [[Balanced Forces|balanced]]. | ||
| + | |||
| + | Uniform Velocity - The [[object]] remains at a constant [[speed]] and continues in a straight line because the [[force]]s acting on the [[object]] are [[Balanced Forces|balanced]]. | ||
| + | |||
| + | Uniform Speed but Changing Velocity - The [[object]] is changing direction because there are [[Unbalanced Forces|unbalanced forces]] acting on it. | ||
| + | |||
| + | Changing Speed - The [[object]] is changing speed because there are [[Unbalanced Forces|unbalanced forces]] acting on it. | ||
| + | |||
| + | ===References=== | ||
| + | ====AQA==== | ||
| + | |||
| + | :[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Newton’s First Law of motion, page 118, GCSE Physics; Third Edition, Oxford University Press, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe10101 ''Newton’s First Law, page 212, GCSE Combined Science; The Revision Guide, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/178294558X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=178294558X&linkCode=as2&tag=nrjc-21&linkId=f0dfb66dafcb0c6e9449e7b1a4ae1ac330 ''Newton’s first law, page 64, GCSE Physics; The Revision Guide, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782946403/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946403&linkCode=as2&tag=nrjc-21&linkId=32a0abb60dff015b15b50e9b1d7b4644 ''Newton’s First Law, pages 162, 163, GCSE Combined Science Trilogy; Physics, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945970/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945970&linkCode=as2&tag=nrjc-21&linkId=a120d24dcc7cc7a58192069a3aafc1d2 ''Newton’s First Law, pages 194, 195, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA ''] | ||
| + | |||
| + | ====Edexcel==== | ||
| + | |||
| + | :[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Newton’s First Law, page 149, GCSE Combined Science; The Revision Guide, CGP, Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1292120223/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120223&linkCode=as2&tag=nrjc-21&linkId=068ecf40278c32406a7f1c6e66751417 ''Newton’s First Law, pages 14-15, GCSE Physics, Pearson Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1292120193/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1292120193&linkCode=as2&tag=nrjc-21&linkId=572df39392fb4200db8391d98ae6314e ''Newton’s First Law, pages 298-299, GCSE Combined Science, Pearson Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782948163/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948163&linkCode=as2&tag=nrjc-21&linkId=0fdbfd5dd397d6e24a9dfb250f08587f ''Newton’s First Law, pages 33, 34, GCSE Physics, CGP, Edexcel ''] | ||
Latest revision as of 16:15, 23 November 2019
Contents
Key Stage 4
Meaning
Newton's First Law states that "An object in motion will tend to stay in motion in a straight line and an object at rest will tend to stay at rest unless an unbalanced force acts upon it."
About Newton's First Law
- Newton's First Law describes the fact that:
- If the resultant force on an object is zero then it will continue to move at a constant velocity.
- If the resultant force on an object is not zero then an object will accelerate (change speed or direction).
- This means that if an object is observed changing speed or direction then there must be an unbalanced force acting on it.
Examples
Stationary Object - The object remains at rest because the forces and balanced.
Uniform Velocity - The object remains at a constant speed and continues in a straight line because the forces acting on the object are balanced.
Uniform Speed but Changing Velocity - The object is changing direction because there are unbalanced forces acting on it.
Changing Speed - The object is changing speed because there are unbalanced forces acting on it.
References
AQA
- Newton’s First Law of motion, page 118, GCSE Physics; Third Edition, Oxford University Press, AQA
- Newton’s First Law, page 212, GCSE Combined Science; The Revision Guide, CGP, AQA
- Newton’s first law, page 64, GCSE Physics; The Revision Guide, CGP, AQA
- Newton’s First Law, pages 162, 163, GCSE Combined Science Trilogy; Physics, CGP, AQA
- Newton’s First Law, pages 194, 195, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA