![subject](/tpl/images/cats/mat.png)
Mathematics, 11.03.2021 01:00 kaitlynpaigge
A particle accelerates uniformly from 7 ms-1 to 21 ms-1 in 8 s.
How far does it travel in this time?
(b) Lewis is travelling in a car along a straight road. He wonders whether the car is accelerating uniformly.
Lewis estimates that the car takes
5 s to travel a distance of 75 m from A to B, 15 s to travel a distance of 315 m from A to C.
Lewis models the acceleration as a constant a ms-2. He also takes the
speed of the car at A to be u ms-1, as shown in the diagram above.
(i) By considering the motion from A to B, show that
75 = 5u + 12.5a
(ii) Find a second equation involving u and a.
(iii) Hence find the value of u and show that a = 1.2
Thank you very much in advance if you take the time to help me out!
​
![ansver](/tpl/images/cats/User.png)
Answers: 2
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Mathematics
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 15:30
Astore manager records the total visitors and sales, in dollars, for 10 days. the data is shown in the scatter plot. what conclusion can the store manager draw based on the data? question 3 options: an increase in sales causes a decrease in visitors. an increase in sales is correlated with a decrease in visitors. an increase in visitors is correlated with an increase in sales.
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 18:00
!! 10 ! a westbound jet leaves central airport traveling 635 miles per hour. at the same time, an eastbound plane departs at 325 miles per hour. in how many hours will the planes be 1900 miles apart?
Answers: 1
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:00
Give me the equations of two lines that have the same slope but are not parallel.
Answers: 3
![question](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 20:40
David estimated he had about 20 fish in his pond. a year later, there were about 1.5 times as many fish. the year after that, the number of fish increased by a factor of 1.5 again. the number of fish is modeled by f(x)=20(1.5)^x. create a question you could ask that could be answered only by graphing or using a logarithm.
Answers: 1
You know the right answer?
A particle accelerates uniformly from 7 ms-1 to 21 ms-1 in 8 s.
How far does it travel in this time...
Questions
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/User.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/en.png)
English, 06.05.2020 07:23
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 07:23
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 06.05.2020 07:23
![question](/tpl/images/cats/himiya.png)
Chemistry, 06.05.2020 07:23
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/ekonomika.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 06.05.2020 07:23
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/en.png)
English, 06.05.2020 07:23
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/ekonomika.png)