Question

ПОМОГИТЕ ПОЖАЛУЙСТА, ПРОШУ УУУ. 1. Автомобиль массой 1 тонна увеличил скорость с 60 до 90км\ч за 5 мин. Определите силу сообщ. Автомобильного ускорения

Answer 1

Воспользуемся первой формулой нахождения ускорения $a$

$a=\frac{V-V0}{t}$

Подставляем значения:

V0 - 60 км/ч = 16,6 м/с

V - 90 км/ч = 25 м/с

t - 5 минут = 300 секунд

$\frac{25-16,6}{300} = 0,028 m/c ^2$

Теперь найдём силу $H$

$F=ma$

1 тонна - 1000 кг

1000*0,028=28 H

Ответ: сила сообщ. авт. ускорения равна 28 Н

Answer 2

F = ma; a = (v - v₀)/t = (75/3 - 50/3)/300 = 25/900 = 1/36 м/с².

F = 1000·1/36 = 1000/36 = 250/9 ≈ 27,7 Н

Answer 3

Calculation of Force and Acceleration

To determine the force of acceleration, we can use Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration. In this case, the mass of the car is given as 1 tonne, which is equivalent to 1000 kilograms.

The change in velocity of the car can be calculated by subtracting the initial velocity from the final velocity. The initial velocity is given as 60 km/h, and the final velocity is given as 90 km/h. We need to convert these velocities to meters per second (m/s) to be consistent with the SI unit system.

1 km/h is equal to 0.2778 m/s. Therefore, the initial velocity is 60 km/h * 0.2778 m/s = 16.67 m/s, and the final velocity is 90 km/h * 0.2778 m/s = 25 m/s.

The time taken for the car to change its velocity from 16.67 m/s to 25 m/s is given as 5 minutes. We need to convert this time to seconds by multiplying it by 60.

5 minutes * 60 seconds/minute = 300 seconds.

Now we can calculate the acceleration using the formula:

Acceleration = (Change in Velocity) / Time

Acceleration = (25 m/s - 16.67 m/s) / 300 s = 0.0556 m/s^2.

To calculate the force of acceleration, we can use the formula:

Force = Mass * Acceleration

Force = 1000 kg * 0.0556 m/s^2 = 55.6 N.

Therefore, the force of acceleration for the car is 55.6 Newtons.