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Mindmap: Forces, Solving Drag problems: Simply plug the values into the…

- - - - Drag Problems The Drag Equation: Fd=1/2dv^2CdAxs
        
        Density is the density of the fluid that the object is moving through Kg/m^3. For example air has a density of 1.225 Kg/m^3 at sea level and at a temp from 15-20 degrees celsius
        
        Velocity will need to be in m/s. Important to note that the velocity is the speed of the fluid relative to the object
        
        Coefficient of Drag can be determined in a wind tunnel and is based on the shape of the object and the dynamics of the object
        
        Cross Sectional Area is the area perpendicular to the direction of movement, needs to be in meters squared
    - - Newton's Second Law:Fnet=ma, a=Fnet/m, Fg=(coefficient of friction)xFn.
        
        Equations: Ff=𝛍Fn, 𝛍=Ff/Fg, 𝛍=Fa/Fg
        
        Static and Kinetic Friction: Static Friction is not moving and has a higher value. Kinetic Friction is moving and has lower value.
        
        Solving the Equations:
        Step One: Figure out if Fa>Fs , to find this you use the equation:(𝛍s)mg. If the Fs>Fa then the object doesn't move and the problem is over, however if Fa>Fs then the problem continues in step 2.
        Step Two: Once the object begins to move you use Fn=Fa-Fk (to find Fk=(𝛍k) mg).
        Step Three: Using the Net Force you can find acceleration using a=F/m
        Step Four: Use one of the kinematic equations to find the value that you don't have such as the velocity and from that the distance if originally given time
        Step Five: This is AFTER you stop applying force and pushing, Fnet=Fk and then a=F/m keep in this will be negative,
        Step Six: Find your unknown values, use the Vf from before as the Vi and use the Vf as 0 because the object will be at a stop at the end. Use the kinematic equations to find what the question asks you for example if it asks for total distance the object ravels use the kinematic equations to find that
        Step Seven: Add the original value you found to the one you just found. This is important you must add both because if you don't your problem is not complete
        
        Kinematic Equations: D=ViT+1/2at^2, Vf=Vi+at, Vf^2=Vi^2, D= (Vf+Vi)/2t Kinematic image
    - - Equations needed are Fg‖=mgsin𝝷 and Fg⟂=mgcos𝝷=Fn
        
        Solving Inclined Plane Problems: Step One: Figuring out if Fg‖>Ff similar idea to friction problems it moves, if Ff>Fg‖ the object does not move and is at rest. Find Fg‖ and Fg⟂ to do so using equations. Step Two: is to find the acceleration by using Fnet=Fg‖-Ff, the use a=F/m Step Three: Use kinematic equations to find what the question is asking you Step Four: Find the Final Velocity at the bottom of the ramp or hill if relevant to the question Step Five: Find the new acceleration Fnet = Ff = 𝛍·Fn = 𝛍·m·g, use a=F/m (Will Be NEGATIVE) Step Six: Use kinematic equations to answer further questions if there are questions about what happens at the bottem of the slope. Skiier on slope
    - - If a force is applied by an object to another object the object will apply an equal force in the opposite direction. NO EXCEPTIONS. Think about something resting on the ground for example. This is in the FBD leg because it is important to recognize this.
        
        Major Misconceptions: Not every force causes an acceleration only a net force does, the same amount of force applied to different object can have different effects(difference in mass), third law force pairs do not act on the same object