The speed of a car with a mass of 2 tons changes according to the law Vx = 10 + 0.5t (m / s).

The speed of a car with a mass of 2 tons changes according to the law Vx = 10 + 0.5t (m / s). What is the modulus of the acting force on the car?

Initial data: the function of changing the vehicle speed Vx = 10 + 0.5t; m (vehicle weight) = 2 t = 2 * 10 ^ 3 kg.

1) To determine the acceleration with which the car is moving, it is necessary to take the derivative of the function according to which its speed changes: Vx ‘= (10 + 0.5t)’ = 0 + 0.5 * 1 = 0.5 m / s ^ 2.

2) We calculate the modulus of the force acting on the car: F = m * a = 2 * 10 ^ 3 * 0.5 = 1 * 10 ^ 3 N = 1 kN.

Answer: The modulus of the acting force on the car is 1 kN.



One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.