In short-track speed skating, the track has straight sections and semi-circles 16 m in diameter. Assume that a 66 kg skater goes around the turn at a constant 12 m/s. A. What is the horizontal force on the skater?
B. What is the ratio of this force to the skater's weight?

a. 1,188 N

b. 1.836

Explanation:

The computation is shown below:

a. For horizontal force, first we need to find out the circular path radius which is shown below:

As we know that

= 8m

Now the horizontal force is

where,

m = 66 kg

v = 12 m/s

and r = 8 m

Now placing these values to the above formula

So, the horizontal force is

= 1,188 N

b. Now the ratio of force to the weight of skater is

= 1.836

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.

the results is a decrease in air temperature with an increase of altitude.

explanation: