Askier moving at 5.30 m/s encounters a long, rough horizontal patch of snow having coefficient of kinetic friction 0.220 with her skis. how far does she travel on this patch before stopping?

6.5 m

Explanation:

First of all, we need to compute the acceleration of the skier. We know that there is only force acting on the skier: the force of friction, which is in the opposite direction to the motion of the skier. Using 2nd Newton Law:

where is the force of friction, with

is the coefficient of kinetic friction

m is the mass of the skier

is the acceleration due to gravity

Re-arranging the equation, we find:

So now we can use the following SUVAT equation to calcualte the total displacement of the skier before stopping:

where

v = 0 is the final velocity

u = 5.30 m/s is the initial velocity

a = -2.16 m/s^2 is the acceleration

d = ? is the displacement

Solving the formula for d, we find:

c.is a substance that requires a small amount of energy per gram to raise its temperature; has strong cohesive forces between molecules.

explanation:

a colorless, transparent, odorless liquid that forms the seas, lakes, rivers, and rain and is the basis of the fluids of living organisms.

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it