lindsey vonn has a mass of 54kg. she is doing a ski race where the top elevation is 1595 and the base elevation is 825m. calculate the total gravitational potential energy of vonn at the start of her race

the part of the wave he is travelling on is the crest

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.