A75-kg human footprint is 0.05 m when the human is wearing boots. suppose you want to walk on snow surfce that can at most support a pressure of 3 kpa. what should the minimal total snowshoe area be?

area is  0.245 m²

Explanation:

The equation for pressure is

       P = F / A

Where P is the pressure, F the force and A the area where the force is applied.

With the data we can calculate the pressure applied by the feet on the human on the floor

        P1 = W / A = mg / A

        P1 = 75 9.8 / 0.05

        P1 = 14700 Pa

Now they tell us that the maxi maque pressure supports the snow is 3 kPa = 3000 Pa, the way to decrease the pressure is to increase the area on which force is applied.

        P2 = F / A2

 In this case we will calculate the minimum area, so we use the maximum pressure that supports the snow (P2 = 3000 Pa) and the force remains the weight of man

        A2 = F / P2

        A2= mg / P2

        A2 = 75 9.8 / 3000

       A2 = 0.245 m²

the independent variable, the one that is intentionally manipulated, is whether or not the car hits the barrier.

the dependent variable, the one that you measure the response in, is the distance that the washers travel.

hello there!

your answer is a “generator”

a generator does not create energy but instead it transforms it.

it’s basically a motor working in reverse.