The area under the curve represents that total distance traveled
So
........(and not 4)
And we are given deceleration so we get second equation
Do you need more help?
Adarsh
First of all its not a trapezium .. (to know more about trapezium try to search the word "trapezium" in Wikipedia/google)
Ok here I will show you how I found that area
1st step:
Area of the two triangles (on the upper side) which will be formed when we form a line y= V
they are found using the formula 1/2 x (base) x (height)
Area of first triangle = 1/2 x (T) x (100-V)
Area of second triangle = 1/2 x (2T) x (100-V)
2nd Step :
Area of that rectangle which is below the line Y= V
= Length x Breadth
Area of rectangle = V x 4T
-------------------------------
Add them you get the complete area
as in previous post
Feel free to ask if there is any other doubt.