Take Class 11 Tuition from the Best Tutors
Affordable fees 1-1 or Group class Flexible Timings Verified Tutors Search in
(i) Show that there will be no collision if the first train is moving with velocity v1 and velocity of other train is v2, if d > (v1 -v2)2 / 2a.
(ii) Determine the relative velocity of two objects moving with same velocity in the same directions.
(iii) What is the abilities of driver which you will appreciate?
Asked by Dhruv Last Modified
Answer 
Initial velocity of train 1 is v1
Initial velocity of train 2 is v2
Relative velocity of train 1 wrt train 2 is v1 - v2
Assuming distance between first train and second train is d when driver noticed.
Using law of motion
Final velocity of train 1 is 0
-ve acceleration as its retardation.
v^2 - u^2 = 2aS
0 - (v1 - v2)^2 = 2a d
d = (v1 - v2 ) ^2 / 2a
It means train is going to hit train 2 when distance is equal to RHS.
So d must be greater than RHS to make train stop earlier.
Drivers attentiveness is to be appreciated. And judgement for distance and applying brakes asap.
Related Questions
Is ordinary light a form of energy or is made of particles?
How to remember all formulas in physics
A body is initially at rest. It undergoes one-dimensional motion with constant acceleration. The power delivered to it at time t is proportional to
(i) t1/2 (ii) t (iii) t3/2 (iv) t2
Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com
Ask a QuestionRelated Lessons
Recommended Articles
The Rising Problems in Indian Government School
With the mushrooming of international and private schools, it may seem that the education system of India is healthy. In reality, only 29% of children are sent to the private schools, while the remaining head for government or state funded education. So, to check the reality of Indian education system it is better to look...
Read full article >
5 Engaging Activities For Children To Get...
Learning for every child starts from a very young age. While the formal methods include school curriculums and private lessons, the informal methods include dancing, music, drawing, and various fun-filling activities. Playing games and practising these types of activities helps the children get out of boredom and...
Read full article >
How To Choose The Right School For Children?
Quality education does not only help children to get a successful career and life, but it also hugely contributes to society. The formal education of every child starts from school. Although there are numerous schools, parents find it challenging to choose the right one that would fit their child. It is difficult for them...
Read full article >
6 Healthy Habits of School Children
While schools provide formal education to the children, the home is where they start learning about things informally. Parents think that schools will take the initiative to educate their children. Well, this is partially true, as parents also play an essential role in bringing up their child. For the development of particular...
Read full article >
Looking for Class 11 Tuition ?
Learn from the Best Tutors on UrbanPro
Are you a Tutor or Training Institute?
Join UrbanPro Today to find students near youThe best tutors for Class 11 Tuition Classes are on UrbanPro
The best Tutors for Class 11 Tuition Classes are on UrbanPro
62
