Question

На тело действует сила 2кН найти массу тела если тело двигалось с ускорением если тело прошло 200 м за 2 с из состояния покоя. Очень срочно. Решите пожалуйста

Answer 1

Объяснение:

2кН переволем в Н=2*10^3 Н, ускорение равно 100м/с

2 закон Ньютона:

F=ma

выводим m

m=F/a=2*10^3/100=0,02 *10^3=20

Answer 2

Problem Analysis

We are given the following information: - Force acting on the body: 2 kN - Distance traveled by the body: 200 m - Time taken to travel the distance: 2 s

We need to find the mass of the body and the acceleration it experienced.

Solution

To find the mass of the body, 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:

F = m * a

We are given the force (2 kN) and the distance (200 m) traveled by the body. We can use the equation of motion to find the acceleration:

s = ut + (1/2)at^2

where: - s is the distance traveled (200 m) - u is the initial velocity (0 m/s, as the body starts from rest) - a is the acceleration (unknown) - t is the time taken (2 s)

Simplifying the equation, we get:

200 = 0 + (1/2)a(2^2)

Solving for a, we find:

a = 200 / 2^2 = 200 / 4 = 50 m/s^2

Now that we have the acceleration, we can substitute it back into Newton's second law to find the mass:

2 kN = m * 50 m/s^2

Converting 2 kN to Newtons:

2 kN = 2000 N

Simplifying the equation, we get:

2000 N = m * 50 m/s^2

Solving for m, we find:

m = 2000 N / 50 m/s^2 = 40 kg

Therefore, the mass of the body is 40 kg and the acceleration it experienced is 50 m/s^2.

Answer

The mass of the body is 40 kg and the acceleration it experienced is 50 m/s^2.