What occurs when a reaction reaches equilibrium? 1)The concentration of the reactants increases.
2)The concentration of the products increases
3)The rate of the forward reaction is equal to the rate of the reverse reaction
4)The rate of the forward reaction is slower that the rate of the reverse reaction.

3)The rate of the forward reaction is equal to the rate of the reverse reaction

The Rate of Forward Reaction is equal to the rate of the reverse reaction.

Explanation:

Hope this helps :)

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied