Question

select the correct answer. a classmate finds that it takes 1.090 seconds for a tossed ball to touch ground. how many significant figures are in this measurement? a. 4 b. 3 c. 2 d. 1

Explanation:

Step1: Identify non - zero digits

Non - zero digits are significant. In 1.090, 1, 9 are non - zero digits.

Step2: Consider zeros between non - zero digits

The zero between 1 and 9 (0 in 1.090) is significant as it is between non - zero digits.

Step3: Consider trailing zeros in a decimal number

The trailing zero (the last 0 in 1.090) is significant in a decimal number. So there are 3 significant figures.

Answer:

B. 3