Question

Поезд за 10 сек разогнался от 5 ти м/с до 54 км/ч,масса равна 1 миллион кг,определить силу с которой тянет поезд

Answer 1

Дано
t=10 c
V0=5 м/с
V=15 м/с
m=1 000 000 кг
F-?
F=ma
a=(v-vo)/t    a=(15-5)/10=1 м/с

Answer 2

Calculation of the Force

To determine the force with which the train is being pulled, 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.

Given: - Initial velocity (u) = 5 m/s - Final velocity (v) = 54 km/h = 54,000 m/3600 s = 15 m/s - Time (t) = 10 s - Mass (m) = 1,000,000 kg

To find the acceleration (a), we can use the formula:

a = (v - u) / t

Substituting the given values:

a = (15 - 5) / 10 = 1 m/s^2

Now, we can calculate the force (F) using the formula:

F = m * a

Substituting the given values:

F = 1,000,000 kg * 1 m/s^2 = 1,000,000 N

Therefore, the force with which the train is being pulled is 1,000,000 Newtons.