Question

мотогонщик преодолел первый участок трассы за 54 с,второй за 46 с,а третий на n быстрее,чем второй.Сколько ремени затратил мотогонщик на прохождение этих 3-ёх участков?Найдите значение полученного выражения если n=9;17;22 Помогите решить плииииииизик!!!!!!!

Answer 1

T1 = 54 сек
t2 = 46 сек
t3 = 46+n

n=9
54+46+46+9=155 (сек)
137 сек = 2 мин 35 сек
При n=9 мотогонщик затратит 2 минуты и 35 секунд

n=17
54+46+46+17=163 сек
129 сек = 2 мин 43 сек
При n=17 мотогонщик затратит 2 минуты 43 секунд

n=22
54+46+46+22=168 сек
168 сек = 2 мин 48 сек
При n=22 мотогонщик затратит 2 минуты 48 секунды

Answer 2

Problem Analysis

We are given that a motorcycle racer completed the first section of the track in 54 seconds, the second section in 46 seconds, and the third section in a time that is n seconds faster than the second section. We need to find the total time the racer spent on these three sections for different values of n.

Solution

To find the total time spent by the racer on the three sections, we need to add the times taken for each section.

Let's denote the time taken for the first section as t1, the time taken for the second section as t2, and the time taken for the third section as t3.

Given: - t1 = 54 seconds - t2 = 46 seconds - t3 = t2 + n seconds

To find the total time, we add the times for each section:

Total Time = t1 + t2 + t3

Substituting the given values:

Total Time = 54 seconds + 46 seconds + (t2 + n) seconds

Simplifying the expression:

Total Time = 100 seconds + t2 + n seconds

Now, we can substitute the given values of n to find the total time for each case.

For n = 9: Total Time = 100 seconds + 46 seconds + 9 seconds = 155 seconds

For n = 17: Total Time = 100 seconds + 46 seconds + 17 seconds = 163 seconds

For n = 22: Total Time = 100 seconds + 46 seconds + 22 seconds = 168 seconds

Therefore, the total time spent by the motorcycle racer on the three sections for n = 9 is 155 seconds, for n = 17 is 163 seconds, and for n = 22 is 168 seconds.

I hope this helps! Let me know if you have any further questions.