A skier is gliding along at 2.0m/s on horizontal, frictionless snow. He suddenly starts down a 15∘ incline. His speed at the bottom is 13m/s what is the length of the incline? How long does it take him to reach the bottom?

Question

jfraser · Answer

set up a table with the pieces of information: $\Delta x$, $v_i$, $v_f$, a, and t

anonymous · Answer

F=ma
F=m*g*sin(15)
a=F/m=g*sin(15)=2.54 m/s^2
v^2=u^2+2as
s=(v^2-u^2)/2a
s=(13^2-2^2)/(2*2.54)
s=32.53m