How many significant figures are present in the measurement 9.86 m/s²?

The measurement 9.86 m/s² has three significant figures. To determine the number of significant figures, we look at the digits in the number. All non-zero digits are considered significant, and any zeros that are between significant digits are also counted. In this case, the digits 9, 8, and 6 are all non-zero and therefore significant.

There are no leading zeros or trailing zeros in this measurement that could affect the count of significant figures. Thus, the presence of three figures—9, 8, and 6—indicates that 9.86 is reported with a precise level of measurement, which is reflected in the answer of three significant figures.