Newtons First Law
An object will continue to move at a constant velocity unless it feels an unbalanced push or pull
Newtons Second Law
Acceleration is directly proportional to total force and inversely proportional to mass
Newtons Third Law
Whenever two objects interact, each object exerts an equal force on the OTHER object. These forces are equal in magnitude but opposite in direction
Newtons Laws Overview
Identifying interactions
System Schema
- Shows what objects are acting on each other
- Shows the direction and strength of forces acting on an object
Force Calculations
Force Gravity
- Fg=Mass * Gravitational force (-9.8 on earth)
- Fs=-Spring Constant * change in position
- Ff= Coefficient of friction* normal force
- Two coefficients of frictions, static for when object is not in motion up until it starts moving, and kinetic for once an object is moving
Solving Force Problems
Draw system schema, force diagram, and force table. Fill in values you know. Use force equations to solve for missing values
Relating Representations of Motion and Force Models
Motion and forces are connected with the equation Fnet=Mass*Acceleration
This then allows these equations to be used
This then allows these equations to be used
Solving Problems with Forces and Motion
Solving problems with forces and motion start the same as regular force problems, draw system schema, force diagram, and force table. Fill in values you know. Use force equations to solve for missing values. But you won't be able to find everything through this so you need to use F=MA to relate it back to motion equations which will allow you to find the rest of your missing values.
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