Ask Question
23 November, 23:38

Light, dry snow is called powder. Skiing on a powder day is different than skiing on a day when the snow is wet and heavy. When you slow down on dry snow the maximum (negative) acceleration caused by the snow acting on your skis is about two-fifths as much as that of stopping on wet snow. For a given initial velocity, how does the time td td it takes to stop on dry snow differ from the time tw it takes to stop on wet snow?

+3
Answers (1)
  1. 23 November, 23:59
    0
    Given:

    - Acceleration a_dry = 0.4*a_wet

    - initial velocity V_i

    Find:

    By how much does time taken to stop of dry snow differ from time taken to stop on wet snow?

    Solution:

    - Time taken to stop on wet snow t_wet:

    V_f = V_i + a_wet * t_wet

    t_wet = - a_wet / V_i

    - Time taken to stop on wet snow t_wet:

    V_f = V_i + a_dry * t_dry

    t_dry = - a_dry / V_i

    - Difference in t_wet and t_dry:

    t_dry - t_wet = - a_dry / V_i + a_wet / V_i

    dt = (a_wet - a_dry) / V_i

    dt = (a_wet - 0.4*a_wet) V_i

    dt = 0.6*a_wet / V_i
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Light, dry snow is called powder. Skiing on a powder day is different than skiing on a day when the snow is wet and heavy. When you slow ...” in 📗 Physics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers