In training, the athlete ran 3.5 laps with a radius of 50m. Determine the path and module of its movement.

| September 5, 2021 | education

In training, the athlete ran 3.5 laps with a radius of 50m. Determine the path and module of its movement. A) the path is 1.5 km; travel module 0.15 km B) track 1.1 km; module of movement 0.10 km C) track 1, 2 km; module of movement 0, 20 km D) path 314 m; travel module 0.05 km

N = 3.5.
R = 50 m.
L -?
S -?
The length of the circle is determined by the formula: L1 = 2 * P * R, the number P is the number pi, R is the radius of the circle.
Since the athlete ran N = 3.5 laps, the path L = N * 2 * P * R.
L = 3.5 * 2 * 3.14 * 50 m = 1100 m = 1.1 km.
The displacement S is called the vector that connects the starting and ending positions of the body.
Since the athlete has run exactly 3.5 laps, he will stop in front of the starting point, only on the back side of the circle. The displacement S will be equal to the diameter of the circle, S = 2 * R.
S = 2 * 50 m = 100 m = 0.1 km.
Answer: B) the path is 1.1 km; travel module 0.10 km



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