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marshall104
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I'm in a physics 201 course and very confused about the kinematic equations. Is there anybody out there who can describe what each one means?
Thanks,
Mike
Thanks,
Mike
It's hard to give generic advice without seeing the kind of problem that's bugging you. Like anything else, it depends on what you're given and what you're trying to find. Often you'll have to use several kinematic relationships to solve a problem.marshall104 said:What is it that I should be looking for when applying these equations?
marshall104 said:I'm in a physics 201 course
marshall104 said:I'm in a physics 201 course and very confused about the kinematic equations. Is there anybody out there who can describe what each one means?
Thanks,
Mike
Andy Resnick said:The fourth one, vf^2 = vi^2 + 2a(xf - xi), I confess is a bit of a mystery to me. I think one needs calculus to derive it, and it is also special in that 'time' is not a part of the expression.
ideasrule said:Not at all. It can easily be derived from:
vf = vi + a*t
xf = x1 + vi*t + 1/2 a*t^2
Just isolate t in the first equation and substitute into the second.
Kinematic equations are mathematical equations that describe the motion of objects. They are based on the principles of motion, such as velocity, acceleration, and displacement.
There are five kinematic equations, which are also known as the "Big Five" equations. These include the equations for displacement, velocity, acceleration, time, and initial velocity.
These equations represent the relationship between an object's motion and its physical properties, such as position, velocity, and acceleration. They can be used to solve for unknown variables in a given motion problem.
Kinematic equations only describe the motion of an object, while dynamics equations also take into account the forces acting on the object. Kinematic equations are used to solve for motion variables, while dynamics equations are used to solve for force and motion variables.
Kinematic equations can be used to solve a variety of problems involving motion, such as finding the velocity of an object, calculating the distance traveled, or determining the acceleration of an object. They are commonly used in physics, engineering, and other scientific fields.