Question

R=40м m=2т V(скорость)=36км/час g=10м/с F=?

Answer 1

Ответ:

Ответ 15кН

Объяснение на фото

Answer 2

This looks like a physics problem! The formula to calculate force (F) can be derived from Newton's second law, which states that force is equal to mass multiplied by acceleration (F = m * a). In this case, we need to find acceleration.

Acceleration (a) can be calculated using the kinematic equation: $V^2 = U^2 + 2a s$, where:

• $V$ is the final velocity,
• $U$ is the initial velocity,
• $a$ is the acceleration,
• $s$ is the displacement.

Given that the car starts from rest ($U = 0$), the equation simplifies to $V^2 = 2a s$. Rearranging for acceleration ($a$), we get $a = \frac{V^2}{2s}$.

Now, the force (F) can be found using $F = m * a$.

Let's plug in the values:

$V = 36 \, \text{km/h}$ (convert to m/s by dividing by 3.6, so $V = \frac{36}{3.6} \, \text{m/s}$), $s = 40 \, \text{m}$, $m = 2000 \, \text{kg}$.

$a = \frac{\left(\frac{36}{3.6}\right)^2}{2 \times 40}$

Once we find $a$, we can use $F = m \times a$ to get the force. Let me calculate that for you.