Question

Спортсмен пробежал дистанцию 100 м за 12,25 секунд. Чему равна цена деления секундомера; погрешность измерения. Как правильно с учётом погрешности записать истинное значение времени значение времени?​

Answer 1

Ответ:

цена деления равна 1/4 или 0,25 сек

Answer 2

Цена деления равна 1/4 или 0,25 сек

Answer 3

Calculation of Stopwatch Division and Measurement Error

To determine the division of the stopwatch and the measurement error, we can use the information provided. The athlete ran a distance of 100 meters in 12.25 seconds.

The stopwatch measures time in seconds, so we need to calculate the division of the stopwatch in seconds. To do this, we can divide the total time taken (12.25 seconds) by the number of divisions on the stopwatch.

Let's assume the stopwatch has n divisions. The division of the stopwatch in seconds can be calculated as:

Division of Stopwatch = Total Time / n

To find the measurement error, we need to consider the precision of the stopwatch. The measurement error is typically half of the smallest division on the stopwatch. However, since we don't have information about the smallest division, we cannot determine the exact measurement error.

Recording the True Value of Time with Error Consideration

When recording the true value of time, it is important to consider the measurement error. The true value of time can be written as the measured time plus or minus the measurement error.

In this case, since we don't have the exact measurement error, we cannot provide the precise true value of time. However, we can provide an approximate range for the true value of time.

For example, if the measured time is 12.25 seconds and the measurement error is assumed to be 0.01 seconds, the true value of time can be written as:

True Value of Time = Measured Time ± Measurement Error

True Value of Time = 12.25 seconds ± 0.01 seconds

Please note that the actual measurement error may differ based on the precision of the stopwatch used. It is always recommended to consult the manufacturer's specifications or guidelines for accurate information on the stopwatch's division and measurement error.