Question

Мотоцикл движищуюся со скоростью 72км/ч начал тормозить , Какой путь он пройдет до остоновки ,если каэфицент трения 0,2

Answer 1

72км/ч=20м/с
S=V^2/2a 400/4 = 100 м
a=μg=2 м/с^2

Answer 2

Calculation of Stopping Distance for a Motorcycle

To calculate the stopping distance of a motorcycle, we need to consider the initial speed, the coefficient of friction, and the deceleration due to braking.

Given: - Initial speed (V0) = 72 km/h - Coefficient of friction (μ) = 0.2

To calculate the stopping distance, we can use the following formula:

Stopping Distance = (V0^2) / (2 * μ * g)

Where: - V0 is the initial speed - μ is the coefficient of friction - g is the acceleration due to gravity (approximately 9.8 m/s^2)

Let's plug in the values and calculate the stopping distance.

Step 1: Convert the initial speed from km/h to m/s.

1 km/h = 1000 m / (60 * 60) s = 0.2778 m/s

So, the initial speed (V0) = 72 km/h * 0.2778 m/s = 20 m/s

Step 2: Calculate the stopping distance using the formula.

Stopping Distance = (V0^2) / (2 * μ * g)

Stopping Distance = (20^2) / (2 * 0.2 * 9.8)

Stopping Distance = 400 / (3.92)

Stopping Distance ≈ 102.04 meters

Therefore, the motorcycle will travel approximately 102.04 meters before coming to a stop.

Please note that this calculation assumes a constant coefficient of friction and does not take into account other factors such as reaction time or the condition of the road surface.

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