# Thread: Calculating acceleration rates

1. ## Calculating acceleration rates

Hi,
Does anyone know how to calculate this formula ?

Acceleration for my controller is specified as "inches per minute per second"

a. If my acceleration rate is 500 inches per minute per second

b. My target speed is 100 inches per minute.

What distance (thousands of a inch or inches) would be required to reach the target speed from a dead stop ?

Thanks, Dean

2. Assuming straight line acceleration - 1/5th of a second.

3. fyffe555 is correct that it will take 1/5 of a second.

Your question is what distance it will travel.

s = a t^2/2 (the distance equals 1/2 the acceleration times the square of the time).

Convert the acceleration from inches per minute per second to inches per second per second => 50/6 = 8.33 inches per second per second.

Then the distance = 8.33 * .2 * .2 / 2 = .167 inches

See, I knew that high school physics would come in handy some day. Thanks to "Doc" Rosenberg, my physics teacher -- Dead, but not forgotten.

Ken

4. ## Thanks

Thank you both very much for the response, I guess I should of took physics in high school instead of auto shop (can't work on todays cars anyway)

Thanks, Dean

• Hi All.

How do you calculate the time and distance if the path is not a straight line?