Question

Автомобиль двигается под действием силы тяги 17кН. Найти ускорение автомобиля, если масса автомобиля равна 2т 350кг. Найти силу действующую на лодку с массой 760кг, а ускорение равна 2,5м/с². Человек движется со скоростью 2 м/с масса человека равна 70кг. Найти импульс человека

Answer 1

1) 1. Дано:
Fт=17кН=17000
m=2т=2000кг
-----------
a-?
Решение:
F=ma=> a=F/m= 17000/2000=8,5м/с^2
Ответ:а=8,5м/с^2

2. Дано:
Fт=17кН=17000
m=350кг
-------------
a-?
Решение:
Fт=ma=>a=F/m=17000/350~48
Ответ:48
2)Дано:
m=760кг
а=2,5м/с^2
--------------
Fт-?
Решение:
Fт=аm=2,5*760=1900Н
Ответ:Fт=1900Н
3)Дано:
V=2м/с^2
m=70кг
--------------
p-?
Решение:
p=mv=2*70=140кг*м/с
Ответ:p=140кг*м/с

Answer 2

Calculation of Acceleration for the Car:

To find the acceleration of the car, 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 force acting on the car is the force of traction, which is given as 17 kN (kilonewtons), and the mass of the car is 2,350 kg.

Using the formula:

Force = Mass x Acceleration

We can rearrange the formula to solve for acceleration:

Acceleration = Force / Mass

Substituting the given values:

Acceleration = 17,000 N / 2,350 kg

Now, let's calculate the acceleration:

Acceleration = 7.2340 m/s²

Therefore, the acceleration of the car is approximately 7.2340 m/s².

Calculation of Force on the Boat:

To find the force acting on the boat, we can use Newton's second law of motion again. The formula