Question

Какая сила на автомобиль массой 2,5 т если за 10с скорость его изменяется от 36км/ч до 72км/ч

Answer 1

А=(V-V0)/t= (20-10)/10{перевел в систему СИ}=1
    F=ma => F= 2500*1=2500H

Answer 2

Calculation of the Force on the Car

To calculate the force on 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.

Given: - Mass of the car (m) = 2.5 tons = 2500 kg - Initial velocity (v1) = 36 km/h - Final velocity (v2) = 72 km/h - Time taken (t) = 10 s

To calculate the acceleration, we need to convert the velocities from km/h to m/s.

Converting the velocities: - Initial velocity (v1) = 36 km/h = 10 m/s - Final velocity (v2) = 72 km/h = 20 m/s

Now, we can calculate the acceleration (a) using the formula:

a = (v2 - v1) / t

Substituting the values: a = (20 m/s - 10 m/s) / 10 s = 1 m/s²

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

F = m * a

Substituting the values: F = 2500 kg * 1 m/s² = 2500 N

Therefore, the force acting on the car is 2500 Newtons.