The car, moving away, picked up a speed of 108 km / h in 10 seconds. What is the mass of a car if its traction force = 3 KN?

V0 = 0 m / s.
V = 108 km / h = 30 m / s.
t = 10 s.
Ft = 3 kN = 3000 N.
m -?
We express the mass of the car m from 2 Newton’s law, by the difference of the force Ft, which acts on the car, to the acceleration a, which this force imparts: m = F / a
Vehicle acceleration a shows the change in speed per unit of time: a = (V – V0) / t.
The formula for determining the mass of the car m will take the form: m = Fт * t / (V – V0).
m = 3000 N * 10 s / (30 m / s – 0 m / s) = 1000 kg.
Answer: the car has a mass of m = 1000 kg.