Cost effective means for measuring speed and acceleration accurately.
214365
"Accurately" is a difficult term; you don't state how accurately.  However, when I was working on electric vehicles, we had the same problem, and got a special sort of GPS (Global Positioning Satellite) Receiver, called a survey logger.  This, now that SA is ancient history, should be accurate to a few meters, for position, if mounted correctly.  It will take a log of the position, at rates of up to 1Hz, if you get the right kit, and then taking the derivative of the position can give you speed, a second derivative gives acceleration.\n\nALTERNATELY if the acceleration is high (as in a crash), then you need to mount an accelerometer, or a set of tri-axis accelerometers.  The signal from these can often be logged to a laptop computer.\n\nNot a definitive answer; hope this points you in the right direction.
411787
Wow! That could be complicated....see: http://www.icsroscher.de/HeartScope.htm\nYet, an experiment using "cheap and cheerful" technology is described on http://www.picotech.com/experiments/calculating_heart_rate/\nwhich makes use of a (relatively) low cost data logger http://www.drdaq.com/products.html\nwhich plugs directly into the parallel port of your PC, see  http://www.picotech.com/applications/ecg.html\nHope this helps....
320643
An accelerometer is good for measuring acceleration, but it sounds like you wanted to measure position not acceleration (...1 degree tilt...).  You can use the PIC to create an integral of the of the acceleration (first derivative of velocity is acceleration, etc), but it probably won't be very accurate/repeatable unless you can recalibrate frequently.  \n\nIf you have a 'tiltmeter' you can measure angular displacement accurately, and the change in tilt with respect to time would give you acceleration.\n\nYour actuator motor on the robot is using steps (stepper motor)?  You could use that to obtain absolute angular position.  The accelerometer seems like it would be more useful as a feedback device to optimize the final position or speed of the actuator, rather than a position sensor.  \n\nPosition sensors use encoders, resolvers, etc., which the PIC can interface with.
297281
The best way to work this out would be to plot a speed time graph for the information.\n\nOr you could express it as a simultaneous equation.
668874
da/dt is the rate of change of acceleration. Actually this measure is used in advanced mechanics especially celestial mechanics and in engineering studies.
439629
MEDICAL,ENGEENIERCOMPUTER ETC.
417610
Use dimensional analysis:\n\n186 000 mi / s | 1.61 km / mi | 1 s / 1 000 000 μs | = 0.299 km/μs
382818
It measures the density of cumulative clouds. Good Luck !  :)
369454
Velocity is basically speed, normally a constant speed used when measuring extremely fast objects such as bullets. Acceleration is the rate at which an object increases speed. For example a car can accelerate from a standstill to 60mph in ten seconds
340951
False.  m/s (meters per second?) is not a measure of rotary speed.  Until you get that straightened out, no answer can be calculated for a) or b)\n\nBefore posting a ?, do a search here.  This same ? came up yesterday.........!
609030
Strength of material, velocity, distance; any of these ring a bell!
408956
Measure the speed of sound by help of an echo, a stopwatch and a tape-measure. (depending on temperature it is about 430 m/s.\nRepeat your measurements at least 10x and have the average.\nGood luck\n\nTh
158068
for correct tracking of time
363289
acceleration can be found using\na=(m1-m2)g/(m1+m2) = 3*9.8/5 = 5.88 m/s^2
480845
Average gravitational acceleration is about 981 gal
531944
Force - Newtons\nMass - Kilograms\nAcceleration - metres per second
520636
A gravimeter is a device designed to measure the local gravitational field. Also sometimes called a gravitometer, a gravimeter is a type of accelerometer. According to the equivalence principle of Albert Einstein, the effects of a gravitational field are rigorously equivalent to acceleration. Therefore, gravimeters are susceptible to vibration which causes small, oscillatory accelerations. This is counteracted by integral vibration isolation and signal processing.