Your neighborhood friend invites you to swim in their pool for exercise. You're surprised to see how big their backyard is. The pool is a perfect circle. You use the ladder at the edge and swim exactly 5 laps around the circumference of the pool. You're even more surprised to see your neighbor has a giraffe in their backyard. You're scared of giraffes. From the edge of the pool, it only takes you 2.47 seconds to go straight to the exact middle of the pool. Fortunately, you are 4.1 meters from the edge and the giraffe can only reach 2.4 meters. Time to wait for your friend to come help. How many meters of distance did you actually swim in your exercising? It may help to draw a picture. Remember the formula for circumference of a circle.

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.

Answer///air resistance,drag;