Mechanical Energy At what point on the rollercoaster is
the kinetic energy the highest?
A. point A
B. point B
C. point C
D. cannot be determined
with the information provided.

Point C

Explanation:

Remember that kinetic energy is energy a object has when it's in motion so the higher the speed, the higher the kinetic energy is. In this case we have a roller coaster, as the roller coaster goes up the tracks it's kinetic energy is low because it slows down as it climbs to the top of the hill. Then as it sits on top of the hill it's kinetic energy is little to none before it goes down the hill because the roller coaster isn't in motion. As when the roller coaster goes down the hill it's speed increases meaning the kinetic energy increases which means option C or "point C" is your answer.

Hope this helps.

Their underlying asset beta is closest to is 1.08

Explanation:

According to the given data we have the following:

Debt is given as $78 billion

Equity is given as $142 billion

equity beta given as 1.68

Therefore, in order to calculate the underlying asset beta we would have to use the formula of the the equity beta for a levered firm as follows:

betaE =beta A [1 + (Debt / Equity)]

1.68 = \beta A [1 + ($78 B/ $142 B)]

1.68 = \beta A [1 + 0.5493]

betaA = 1.68 / 1.5493

betaA = 1.08

Their underlying asset beta is closest to is 1.08