We can start by finding the coefficient of friction (μ) using the given information:
μ = (2/3) * (weight of car)
μ = (2/3) * (m * g) (where g is the acceleration due to gravity)
Next, we can find the propelling force of the car engine (F) using the given acceleration:
F = m * a
Substituting the given acceleration of 2.4 m/s², we get:
F = m * 2.4
Therefore, the coefficient of friction is μ = (2/3) * (m * g) and the propelling force of the car engine is F = m * 2.4.