(6.5 pt) For each of the following chemical species: (i) Find the total number of valence electrons (ii) Draw the correct Lewis structure and indicate if there is any resonance (iii) For any bonds that are polar covalent, draw the correct dipole representation (iv) Find the Steric Number of the central atom in the Lewis structure (v) Identify the correct shape by VSEPR theory

what is the question here. i think you messed up.

(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