Eli5 Why is force equal to mass multiplied by acceleration and not speed ?

Question

If a car moves consistently at 80 kmh and it weighs at 600kg, is it not generating any force? since you know, a=0, am I stupid or is Newton ?

In: 13

Answer 1

It depends on the rules of your scenario (simplifying assumptions)…in the real world cars experience deceleration forces due to dragg and air resistance etc. For a car to move at a consistent velocity of 80 kph, then it must also have some small acceleration which cancels out with the negative forces.