The force needed to stop a car varies directly as its weight W and the square root of velocity V are inversely as the distance d
travelled. When F =36 Newtons, W=120kg, V=100km/h and d=50km. Calculate the force required for V=256km/h, W=200kg and d=800km
1 answer:
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Look for what 'y' is when t = 1 and t = 2. Go to the graph, look at 1 on the bottom axis and go up till you find the point, then go all the way to the left to see what the y-value is, in this case it should be 1200. If you do the same with t = 2, you will get 2400. So our two ordered pairs are:
(1, 1200), (2, 2400)
We can find the slope of these two points by plugging them into the slope formula:
For points in the form of (x1, y1), (x2, y2). Plug in what we know:
Subtract:
Divide:
This is the slope, so we can write the equation:
(1, 1200), (2, 2400)
We can find the slope of these two points by plugging them into the slope formula:
For points in the form of (x1, y1), (x2, y2). Plug in what we know:
Subtract:
Divide:
This is the slope, so we can write the equation:
You should put 4 as x, -3 as y and a as slope to make an equation :
then you can find the slope and the correct equation of the line :
the slope is :
so the equation of the line will be
D is true
hope this helps
then you can find the slope and the correct equation of the line :
the slope is :
so the equation of the line will be
D is true
hope this helps