Jerk Definition and 67 Threads

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Seriously, this is not a joke. I'm too nice and it gets me nowhere. Consider this... The cable guy today knocked down my $2000 flat screen TV. My mom was bitching at him and told him he or his company was going to pay for it. So me and him went outside to discuss it. I could see the...

We all know that, assuming x(t) = position as a function of time, then: x'(t) = v(t) = velocity x''(t) = v'(t) = a(t) = acceleration x'''(t) = v''(t) = a'(t) = j(t) = jerk (assuming j is the symbol for jerk). But what does x''''(t) = j'(t) come out to be? Is there a fourth derivative of...

Suppose an object is suspended above the Earth, then released. It immediately accelerates to 32.2 f/s^2. There should be a jerk as the acceleration changes. Is there an experimental method to measure that jerk? Experimental as opposed to just doing the math. Thanks.

Is anyone aware of a function expressesing position (separation) in terms of time, s=f(x), given only acceleration due to the force of gravity. I am aware of the Gravitational Jerk Equation J= \frac{2Gm}{s^{3}} \frac{ds}{dt} where m=mass of attracting object G = gravitational constant But...

Homework Statement Automotive engineers refer to the time rate change of acceleration as the Jerk. Assuem an object moves in 1 dimention such that it's Jerk is constant. a) determine expressions for it's 1. acceleration ax(t) 2. velocity vx(t) 3. position x(t) given initial...

My gf recently lost weight and is now down to 103 lbs. I find myself more attracted to her than before. I'm sorry, but I just like skinny. I find skinny girls so much more attractive than non-skinny girls. Does this make me superficial?

[mentor's note: the following posts were split off a thread in General Physics: https://www.physicsforums.com/showthread.php?t=155149 ] The only one that comes to mind is the GWB force. It was thought to be of relatively short duration but has demonstrated a much longer lasting effect. The...

I asked a quesion about this a while back, but I never felt that I got a perfectly straight answer. I want to know if there is any real physical situation where there is a constant jerk (third derivative of displacement with respect to time). I am perfectly aware of how common jerk is as well...

Questions on the "jerk" I have two questions relating to the third derivative of displacement with respect to time. My main question is this. Does a jerk ever occur in the natural universe? I know that there are many situations in which acceleration changes over time, but all that I can...

Could the rate of change of accelaration (or jerk in m/s3) affect the trajectory of a projectile? If so could it be to a noticeable extent? Given two systems where projectiles are fired by different propellants, say gasses with different rates of expansion. One reaches its maximum velocity...

What is Jerk? I have a rough idea of what it is, but I would like to know more.

dear sir i want to know clearly about jerk and it's measurement. what i undersatnd is jerk means rate of change of acceleration. if it is measred in terms of g then plot against time. i want to konw is there is any instrument is there to measure it. thanking you

The jerk from your college/workplace who "made it big" Doesn't it irk you when an dishonorable, petty person you know from your alma mater/business achieves "success"? I believe in forgiveness, but I also nourish grievances to those who are overrated and have never suffered. Give below a...

Not sure exactly: 1. Why do passengers jerk forward when the car suddenly stops? I know it is somethin' relative to Newton's law but I don't know which law it is and how it actually happens. and 2. Why do the passengers feel like they are pushed to the outside of a turn.

Anyone- From long ago IIRC a body that transitions from a rest state to a rectilinear moving state undergoes nearly infinite jerk (change in 'a'). On the one hand, my memory is reinforced by the idea that not all functions have infinitely many derivatives... But on the other hand, I may not...

Hi, I'm working on a kinematics problem of rolling a golf ball on a flat plane (4-position infinitesimally separated solution). The solution sought is to be planar, so we're working in 2D only. This is largely irrelevant though, as I'm facing a rather undergraduate puzzler. I need to...