Question

Точка велосипедного колеса, наиболее удалённая от оси вращения, за 0,02 с прошла дугу длиной 20 см. Найдите скорость велосипедиста. Решите. пожалуйста

Answer 1

"Развернув" дугу на дорогу, мы получим отрезок
S = 20 см = 0,20 м

Скорость:
V=S/t = 0,20/0,02 = 10 м/с   или 36 км/ч

Answer 2

Calculation of the Cyclist's Speed

To find the speed of the cyclist, we need to use the formula:

Speed = Distance / Time

Given that the cyclist's wheel traveled a distance of 20 cm in 0.02 seconds, we can substitute these values into the formula to find the speed.

Distance = 20 cm

Time = 0.02 s

Substituting these values into the formula, we get:

Speed = 20 cm / 0.02 s

To calculate the speed in meters per second (m/s), we need to convert the distance from centimeters to meters:

1 meter = 100 centimeters

Therefore, the distance in meters is:

Distance = 20 cm / 100 = 0.2 m

Substituting the values into the formula again, we get:

Speed = 0.2 m / 0.02 s

Simplifying the equation, we find:

Speed = 10 m/s

Therefore, the speed of the cyclist is 10 m/s.