3/7/2023 0 Comments Physics calculator velocity![]() Typically, force plate software will calculate metrics like net force, acceleration, velocity and displacement on a sample-by-sample basis. For example, in the above example we’re calculating the average velocity. Of course, it isn’t always as simple as this. How can I take ownership of my data if I don’t know where it’s come from?.Remember to ask yourself this really important question: Acceleration = net force ÷ body mass (body weight ÷ the acceleration of gravity )Īnd this is why force plate companies should be open with their customers and operate under full transparencies.If we know how much force has been applied to a known mass (our jumper – and we do, that’s why we’re using the force plate in the first place, right?), then we can calculate the following: That’s right, instead of dividing some metrics by time to calculate other metrics, we multiply them by time. The opposite of numeric differentiation is numeric integration. Numerical differentiation is the long-winded way of saying we’ve divided something (say, how far something moves) by time (how long it takes to move). It’s the force that’s either greater or less than our body weight that does this. ![]() This, remember, is because just by standing still we apply force to the ground. If we think back to the bathroom scale analogy of a force plate that I gave a few blog articles ago we can think of net force as force minus body weight. Technically, this gives us what we often refer to as net force, the force that influences movement. If we know the acceleration of the object of interest, and we know it's mass we can multiply these to get force. ![]() that's right: force = mass × acceleration. We've all come across the equation that is often used to describe Newton's second law of motion. We could repeat this process, dividing velocity by time to calculate acceleration - whether the object of interest is speeding up, slowing down, or moving at a constant velocity. However, if we are interested in the direction the object of interest has moved in - and let's face it, direction is a pretty important part of sport - then we'd refer to it as velocity. If we're not worried about the direction the object of interest has moved in then we can refer to the result as speed. So, hopefully we all know that if you know how far something's moved and you know how long it took to move that we can calculate its speed? Essentially, we take how far it's moved and divide it by how long it took to move. Of course, I appreciate that maths (yes, I'm English - we invented the language and that's what we call it) isn't necessarily everyone's cup of tea, but don't fret, I'm no mathematician so I'll do my best to take the worst of the sting out of the following explanation. Now, if you've learned anything from my blog posts it's the power of understanding where your data comes from and it's because of the three points I just listed that I think it's important that you understand how we get velocity from force.
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