In this question all required information's are already provided. Based on these details the answer to the question can be easily determined. Let us now write down all the information's that are already given.
Mass of the roller coaster = 1000 kg
Velocity of the roller coaster = 20.0 m/s
We know the formula for finding the kinetic energy is
Kinetic energy = 0.5 * mass * (velocity) ^2
= 0.5 * 1000 * (20)^2
= 0.5 * 1000 * 400
= 200000 Joules
So the Kinetic energy of the roller coaster is 200000 joules.
Answer:
coordinates of B is ( 4,5)
Step-by-step explanation:
If there two points (x1,y1) and (x2,y2) on a plane then coordinates of mid point is given by
m = (x1+x2)/2 , (y1+y2)/2
Given
m = (-1,1)
A= (-6, -3)
we have to point b
let point b be (x,y)
Then m (-1,1) is given by (-6+x)/2 , (-3+y)/2
(-6+x)/2 = -1
-6 + x = 2*-1 = -2
x = -2+6 = 4
also
(-3+y)/2 = 1
=> -3 + y = 2
=> y = 2 + 3 = 5
Thus , coordinates of B is ( 4,5) answer
Answer:
31/50cm probably?
Edit:
Well stratch, that I don't know, I'm sorry.
The proportion is 0.4401.
We find z-scores that correspond with both ends of this interval. Z-scores are given using the formula:

For the lower end,

The proportion of scores to the left of this number is 0.2514.
For the higher end, the z-score is

The proportion of scores to the left of this number is 0.6915.
To find just the proportion of scores between these two, we subtract;
0.6915-0.2514 = 0.4401.