Please help, I will give brainliest, I am struggling badly.
1 answer:
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Given that the subway stations are 930 m apart, the train have to be accerelated for half the distance and then decerelated for the rest of the distance.
Recall that the distance travelled by an object with an initial velocity, u, for a period of time, t, at an accereration, a, is given by
But, we assume that the train accelerates from rest, thus
The maximum speed is attained at half the center of the distance between subway stations (i.e. at distance = 465 m).
Thus, maximum speed = distance / time = 465 / 23.12 = 20.11 m/s.
Recall that the distance travelled by an object with an initial velocity, u, for a period of time, t, at an accereration, a, is given by
But, we assume that the train accelerates from rest, thus
The maximum speed is attained at half the center of the distance between subway stations (i.e. at distance = 465 m).
Thus, maximum speed = distance / time = 465 / 23.12 = 20.11 m/s.
Answer:
The inequality that represents p are p 125 or p
85.
Step-by-step explanation:
We are given that in order to be invited to tutoring or extension activities, a student's performance must be at least 20 points higher or lower than an average score. The average score is 105.
Let p = the scores for students who are eligible for tutoring or extension activities.
<u>The first condition</u> states that a student's performance must be at least 20 points higher than an average score, that means;
p (105 + 20)
p 125
Similarly, <u>the second condition</u> states that a student's performance must be at least 20 points lower than an average score, that means;
p (105 - 20)
p 85
So, the inequality that represents p are p 125 or p
85.