Question

Транспортное средство разгоняется из состояния покоя до скорости 83 км/ч, сила тяги двигателя 1,6кН. Определите время разгона, если масса транспортного средства одна тонна?Срочно помогите!!!

Answer 1

Ответ:

14.4 c

Объяснение:

v=23 м/с    F=1600 H   m=1000 кг   t=?

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Δp=m*v=F*t

t=m*v/F=1000*23/1600=14.4 c

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Answer 2

Calculation of Acceleration Time

To determine the acceleration time of a vehicle, we can use the formula:

Acceleration Time = Final Velocity / Acceleration

Given: - Initial velocity (v₀) = 0 km/h (since the vehicle starts from rest) - Final velocity (v) = 83 km/h - Acceleration (a) = Force / Mass

The force (F) is given as 1.6 kN, and the mass (m) of the vehicle is 1 tonne (1000 kg).

Let's calculate the acceleration time step by step:

1. Convert the velocities from km/h to m/s: - Initial velocity (v₀) = 0 km/h = 0 m/s - Final velocity (v) = 83 km/h = 23.06 m/s

2. Calculate the acceleration: - Acceleration (a) = Force / Mass = 1.6 kN / 1000 kg = 1.6 m/s²

3. Calculate the acceleration time: - Acceleration Time = Final Velocity / Acceleration = 23.06 m/s / 1.6 m/s²

Let's calculate the result:

Acceleration Time = 23.06 m/s / 1.6 m/s² = 14.41 seconds

Therefore, the time it takes for the vehicle to accelerate from rest to a speed of 83 km/h is approximately 14.41 seconds.

Please note that this calculation assumes constant acceleration throughout the entire process and does not take into account factors such as air resistance or other external forces that may affect the acceleration of the vehicle.