Answer:

Explanation:
To answer the question, we just need to consider the motion along the horizontal direction.
The component of the initial velocity of the ice skater along the x-direction is:

where u = 2.25 m/s is the initial velocity and
is the angle.
The component of the final velocity of the ice skater along the x-direction is

where u = 4.65 m/s is the final velocity and
is the angle.
The acceleration along the x-direction is given by

where
t = 120 s is the time
Substituting,

Answer:
Dark energy is the name given to the mysterious force that's causing the rate of expansion of our universe to accelerate over time, rather than to slow down. That's contrary to what one might expect from a universe that began in a Big Bang. Astronomers in the 20th century learned the universe is expanding
Explanation:
Answer:
The boiling point of liquids always increases when pressure is applied on a liquid. This is because the molecules of a liquid will need more energy to turn into a gaseous state when pressure is applied on that substance.