Please help!

Question

1) While skiing in Jackson, Wyoming, your
friend Ben (of mass 73.8 kg) started his descent
down the bunny run, 23.9 m above the
bottom of the run.
If he started at rest and converted all of
his gravitational potential energy into kinetic
energy, what is Ben’s kinetic energy at the
bottom of the bunny run?
Answer in units of J.

2) What is his final velocity?
Answer in units of m/s.

Answer 1

LOL, you answered your own question

Potential energy = m g h
Kinetic energy = (1/2) m v^2
so
(1/2) m v^2 = m g h = 73.8*9.81*23.9 Joules (your first answer)
so
v = sqrt (2 g h)
(by the way, remember that. You need it frequently)

Answer 2

ur mum