![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)
Other questions on the subject: Mathematics
![image](/tpl/images/cats/mat.png)
Mathematics, 20.06.2019 18:04, izabelllreyes
Rosa makes a small flower garden outside the clubhouse the area of the garden is 851 square meters if the length of the garden is 23 m what is the width of the garden
Answers: 1
![image](/tpl/images/cats/mat.png)
Mathematics, 21.06.2019 19:00, PastelHibiscus
Which equation represents the function on the graph?
Answers: 1
![image](/tpl/images/cats/mat.png)
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 in other subjects:
![Konu](/tpl/images/cats/fizika.png)
![Konu](/tpl/images/cats/geografiya.png)
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/biologiya.png)
Biology, 11.07.2019 15:00
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 11.07.2019 15:00
![Konu](/tpl/images/cats/biologiya.png)
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/ekonomika.png)
Business, 11.07.2019 15:00