Lora (of mass 42.8 kg) is an expert skier. She

Question

starts at 2.3 m/s at the top of the lynx run,
which is 114 m above the bottom.
What is her final kinetic energy at the bottom of the ski run?
Answer in units of J

Answer 1

V^2 = (2.3)^2 + 19.6*114 = 2239.69
V = 47.3 m/s. = Final velocity.

Ek=0.5m*V^2=0.5*42.8*(47.3)^2=47,929 J.