When calculating acceleration, how many decimal places do I leave the answer?
The answer to how many decimal places in a calculation of data usually is based on the “significance rule” relating to calulations of data. Data means value/s of measured quantities. The “significance rule” is that the answer to calculations involving data, should be reported to the LEAST number of significant digits in the data. Thus if you had listed data as: v = 4.0 m/s {two significant digits} u = 0 {not measured data} t = 10.0 sec {three significant digits} The least significant data in this list would be the value for “v” which is two(2) significant figures, {the “u” value being reported as “0” means it is not present and hence not a measured quantity}.
