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Force (definition(very important(probably isnt)))
That which causes an object of mass to change in its motion (i.e. changes its velocity) if it is not balanced.
- Memorise this for physics definitions :(((((((((((((((((((((((((((
Categories of Forces
|
contact |
non-contact |
| push |
shove, kick, punch |
magnetism between same poles |
| pull |
grab, "hug", tug of war |
gravity, magnetism between different poles |
3 Laws of motion
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- An object of mass(mass is important here. Objects lacking mass are not affected by forces!) will continue in its state of motion(could be at rest, being at rest is a "special state of motion") unless acted upon by an unbalanced force
- N.B. motion = velocity, $\therefore$ speed and/or direction.
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- $F = ma$, the acceleration of an object of mass is proportional to the unbalanced force acting on it and inversely proportional to its mass.
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- Every action force has an equal and opposite action force.
- How do things work at all if this is true?
$F_{1} = -F_{2}$
$m_{1}a_{1} = -(m_{2}a_{2})$
The mass of the nail is smaller so the acceleration is greater. Hence the nail accelerates into the dirt or whatever I think. My teacher is Dr Waters pelase help me
