The Dynamics of Newtons LawsDynamics is the

study of forces which cause motion

- By Callie Arnold and Amy Ginter

Magnetic Force

- A force that exists between two electrically

charged moving particles. - They are very large compared to gravitational

forces. - Electric and magnetic forces are very closely

related.

Electric Force

- Very large.
- Produces magnetic forces by moving electric

charges. - Results from electron repulsion of two objects.

Gravitational Force

- The weakest of all the forces.
- It is very small compared to magnetic and

electric forces.

Weak Interaction and Nuclear Force

- The strongest of all the forces.
- Some power plants use nuclear power to provide

electricity to cities today. - Holds the nucleus of an atom together.

Newtons First Law

- A body continues in its state of rest, or of

uniform motion in a straight line, unless it is

acted upon by a net external force. - If you roll a tennis ball on the floor it will

keep going unless its acted on by an outside

force.

Newtons Second Law

- When an unbalanced force acts on a body, the body

will be accelerated. - Two cars, one at rest and one driving in a

straight line, and they collide. The car at rest

is acted upon by the moving car.

Newtons Third Law

- Every force is accompanied by an equal and

opposite force. - A charged body repels another body.

FMA

- Force equals mass times acceleration
- If the force of your hammer on a nail is 36, then

your mass and acceleration would be 6.

MF/A

- Mass equals force times acceleration
- If your mass of the hammer is 8, then your force

could be 32 and your acceleration could be 4.

AF/M

- Acceleration equals force divided by mass
- If the acceleration of your hammer is 12, then

your force could be 144 and your mass could be 12

WMG

- Weight equals mass times gravity
- If your weight is 48, then your mass could be 12,

and your gravity could be 4.

MW/G

- Mass equals weight divided by gravity
- If your mass is 11, then your weight could be 22

and your gravity would be 2.

GW/M

- Gravity equals weight divided by mass
- A car could have the gravity of 100, weight of

200, and mass of 2.

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