Explanation:
The force of the roller-coaster track on the cart at the bottom is given by :
, m is mass of roller coaster
Case 1.
R = 60 m v = 16 m/s

Case 2.
R = 15 m v = 8 m/s

Case 3.
R = 30 m v = 4 m/s

Case 4.
R = 45 m v = 4 m/s

Case 5.
R = 30 m v = 16 m/s

Case 6.
R = 15 m v =12 m/s

Ranking from largest to smallest is given by :
F>E>A=B>C>D
Each person is 80kg. 320/4
I would go with Segment D.
Answer:
Explanation:
<u>Kinematics equation for first Object:</u>

but:
The initial velocity is zero

it reach the water at in instant, t1, y(t)=0:


<u>Kinematics equation for the second Object:</u>
The initial velocity is zero

but:

it reach the water at in instant, t2, y(t)=0. If the second object is thrown 1s later, t2=t1-1=1.02s

The velocity is negative, because the object is thrown downwards.
For this ninth planet, astronomers would most likely assume that: it originated in another star system and was gravitationally captured.
<h3>What is a solar system?</h3>
A solar system is a collection of both outer and inner planetary (astronomical) bodies alongside the Moon that usually orbit around the Sun, in slightly elliptical orbits.
<h3>The planets in the solar system.</h3>
Based on astronomical science, there are nine (9) planets in the solar system and these are;
Astronomers would most likely assume that a planet that orbited the Sun in an <u>opposite direction</u> in contrast to the other planets, originated in another star system and was gravitationally captured.
Read more on the solar system here: brainly.com/question/1286910