If you were on a 31.2deg. slope and an avalanche started 409m up the slope, how much time would you have to...

Question

If you were on a 31.2deg. slope and an avalanche started 409m up the slope, how much time would you have to get out of the way? Answer in sec.

Acceleration of gravity is 9.8 m/s^2

Answer 1

Assuming no friction, the avalanche would cover the 409 m per
409=.5*sin(31.2)*t^2
t=sqrt(2*409/sin(31.2)

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